Eight physiotherapists and four physiotherapy assistants particip

Eight physiotherapists and four physiotherapy assistants participated in the study. The physiotherapists ranged in experience from one

to 14 years post-graduation and the physiotherapy assistants had between two and 10 years of experience. Physiotherapists were managing caseloads of a mean of 8 patients (SD 2). The participants had a mean (SD) age of 68 (13) years, 9 (64%) were male, 7 (50%) had a right-sided stroke lesion, 6 (43%) had a left-sided lesion and 1 (7%) had a bilateral stroke. The average duration of physiotherapy sessions was 55.6 (23.4) minutes (range 19 to 90) (Table find more 1). There was strong agreement between therapist-estimated and video-recorded total therapy times (ICC = 0.90, see Table 1), however there was a systematic overestimation of total

therapy time by the therapists, mean difference 7.7 (SD 10.5) minutes (95% CI selleck products 4.6 to 10.8). The Bland-Altman plot (Figure 1) for total therapy time presents this systematic overestimation. Similarly, there was strong agreement between therapistestimated and video-recorded time for total active time in therapy sessions (ICC = 0.83, see Table 1) with a systematic overestimation of total active time by the therapists, mean difference 14.1 (SD 10.3) minutes, 95% CI 11.1 to 17.1 ( Figure 2). However, there was less agreement between therapist-estimated and video-recorded inactive time (ICC = 0.62, see Table 1), and therapists systematically underestimated the amount of time patients were inactive during therapy sessions, mean difference –6.9 below (SD 9.5) minutes, 95% CI –9.7 to –4.1 ( Figure 3). Comparing the influence of session type (individual versus group) using percentage mean difference,

there was no difference in the accuracy of estimations of total active time between individual (28%) and circuit class therapy (28%) sessions, but therapists tended to underestimate inactive time in circuit class therapy sessions (37%) to a greater extent than in individual therapy sessions (29%) (Table 2). In terms of the various subcategories of activity, ICC scores ranged from 0.73 to 0.99 for all of the categories except for ‘transfers and sit-to-stand practice’, which had a low ICC score of 0.37, indicating only a fair agreement between therapists’ estimations and video recordings (Table 3). As with the total active time, therapists tended to overestimate the time patients spent engaged in the various physical activity categories. The magnitude of this overestimation varied, but in some cases was as high as 63%. This is the largest study to date to investigate the accuracy of therapists in recording therapy time, and the only such study to involve multiple data collection centres and to include group therapy as well as individual therapy sessions.

The filtrate from the above reaction after usual workup and chrom

The filtrate from the above reaction after usual workup and chromatography yielded a mixture of three compounds, a crystalline compound (6) and two gummy but pure products (7) and (8). The crystalline

compound was identified as 2, 3-dihydro-2- (2-hydroxybenzoyl)-3-phenyl-4H-furo [3,2-c] [1] benzopyran-4-one (6) through direct comparison with the same product obtained upon interaction of 3-bromo-4-hydroxycoumarin and benzaldehyde4 a reaction which also afforded (6a) and the identity of (6) was further confirmed by dehydrogenating it to (6a) over palladium-charcoal (Fig. 1). The latter was also obtained by refluxing the dicoumarol (1a) with iodine in ethanol. The two other products (7) and (8) of this reaction were identified TGF-beta inhibitor as stereoisomers 2,3-dihydro-2 (2-hydroxybenzoyl)-2-hydroxymethyl-4H-furo

[3,2-c] [1] benzopyran-4-one on the basis of spectral data. Formation of these compounds is based on the assumption that one of the coumarin nucleus in dicoumarol (1a) gets destabilized through hydroxymethylation and suffers hydrolysis, decarboxylation and equivalent of oxidative phenolic coupling to give (7) and (8) (Scheme 2). Reaction between DMSO-acetic anhydride reagent and other dicoumarols (1c) and (1d) proceeded slowly at room temperature but reached completion relatively at a faster rate at water bath temperature to yield exclusively the dehydration products (4c) and (4d). The expected dehydrogenation involving methine hydrogen did occur for the first time when (1b)

was treated with DMSO – acetic anhydride at room temperature Onalespib manufacturer for 8 h. The yellow crystalline product 3-[(1-benzopyran-2, 4,-dione-3yl)-(4-methoxy phenyl) methine] 4-hydroxycoumarin (2b) was found to be two hydrogens short of the starting material on the basis of its mass spectrum and elemental analysis. Formation of this product can be accounted for from the third possible decomposition of the oxosulphonium species (x) involving elimination of methine proton and dimethyl sulphide (Scheme 1) but this happening only and only with the dicoumarol (1b) and not in any other one is however intriguing. The reaction between DMSO-acetic anhydride reagent and the dicoumarol (1e) at room and water bath temperatures gives the hydroxymethylated Edoxaban product (9) (Scheme 3) apart from the usual dehydration product (4e). Dicoumarol is an anticoagulant and thus keeping in view its importance, it was treated with DMSO-acetic anhydride an effective reagent in the synthetic organic chemistry, and ten compounds (2b), (3), (4a), (4c), (4d) (4e), (6), (7), (8) and (9) were formed. However, these compounds can be evaluated for anticoagulant activity which can be of great benefit to mankind. All authors have none to declare. “
“Urolithiasis, formation of kidney stone presence of one or more calculi in any location within the urinary tract, is one of the oldest and wide spread diseases known to man.

We conducted a systematic literature search in October 2011 acros

We conducted a systematic literature search in October 2011 across five electronic databases: PubMed®, ISI Web of Knowledge, EMBASE, Scopus, and EconLit. The search used variations this website of two search terms:

“hepatitis A” and [one of six countries]. We included articles primarily focused on hepatitis A epidemiology, economics and/or policy. Epidemiologic articles included those reporting seroprevalence, incidence, prevalence, endemicity, clinical manifestations or risk factors of hepatitis A. Policy articles included government reports, editorials or reports without primary data, which were focused on issues related to vaccine adoption, prevention or control efforts for hepatitis A. We excluded articles less relevant to this analysis, such as papers focusing on biological mechanisms of hepatitis A, non-human studies, vaccine trial results, and case studies. Given that hepatitis A was not high on the global agenda prior to 1990, our search was limited to articles published since then. For most countries, pre-1990 seroprevalence data was reported in articles published after 1990 providing historical data with trends in seroprevalence over several decades. In some instances, however, it was necessary to search pre-1990 literature NVP-BEZ235 nmr to fill in data gaps on seroprevalence

prior to 1990. Articles in each of the local languages (Chinese, Korean, Russian, Sitaxentan Spanish) were included in the search. Reference lists of primary studies and systematic reviews were also scanned to identify additional studies missed by the initial search. Articles were first reviewed for inclusion based on title. Abstracts and full articles were reviewed next to determine study inclusion. A supplementary internet search was conducted to fill in gaps in country-specific epidemiological data or vaccine policy information. Direct scan of ministry of health,

pediatric society, infectious disease society, immunization technical advisory councils, medical journal databases or other relevant websites was also conducted for each country to identify relevant articles or reports, find current recommendations or fill specific data gaps. For articles meeting the inclusion criteria, we abstracted data on background information (authors, title, year of publication and data collection, journal, country/region, type of article), as well as study design, study subject characteristics, results, policy recommendations and perceived barriers and facilitators to hepatitis A vaccine adoption. We summarized results separately for epidemiologic and policy-focused articles. Articles in Russian, Spanish, and Chinese were abstracted by native language speakers and writers of those languages, with a background in healthcare analysis.

Animals were housed in standard cages, in groups of maximal 8 ani

Animals were housed in standard cages, in groups of maximal 8 animals during the pre-immunization phase and in study groups of 6 animals during the immunization phase. The study groups were transferred to negatively pressurized glovebox isolator cages on the day of challenge. During

the whole study animals were provided with commercial food pellets and water ad libitum. The experimental protocol was approved before start of the experiments by an independent institutional animal ethics committee according to the Dutch law. Five groups of six ferrets received three intranasal immunizations (droplets: 100 μl in each nostril, using a pipet with filtertip) under anesthesia with ketamine and domitor at days 0, 21 and 42. Groups 3, 4 and 5 were intranasally immunized with 200 μl Endocine™ formulated H1N1/California/2009 GW786034 purchase split antigen containing 5, 15 and 30 μg HA, respectively. Group 6 was intranasally immunized with 200 μl Endocine™ formulated H1N1/California/2009 whole virus antigen containing 15 μg

HA. Control group 1 received 200 μl of saline intranasally. One group selleck products of six ferrets (group 2) received two subcutaneous immunizations (days 21 and 42 using 25Gx5/8” needles) with 0.5 ml Fluarix®, season 2010/2011, a non-adjuvanted trivalent influenza vaccine (TIV) that also contains the pH1N1 (15 μg HA) component. Blood samples for serum preparation were collected prior immunization on days 0, 21 and 42 and before challenge on study days 64 and 70. Four weeks after the last immunization (day 70), all ferrets were challenged with wild-type influenza A/Netherlands/602/2009 (wt-pH1N1) virus as previously described [30]. Briefly, 106 50% tissue culture infective doses (TCID50) of wt-pH1N1 virus was diluted in 3 ml of PBS and administered via the intratracheal route under anesthesia with a cocktail of ketamine and domitor. Several procedures were performed on the ferrets over the

course of the experiment. For implantation of temperature sensors, immunizations, viral challenge and computed tomography (CT) imaging the animals were anesthetized with a cocktail of ketamine (4-8 mg/kg: i.m.; Alfasan, Woerden, The Netherlands) and domitor (0.1 mg/kg: i.m.; Orion Pharma, Espoo, Finland). For sampling (blood, swabs and nasal washes) and euthanasia by exsanguination, the animals were anesthetized with ketamin. Two weeks prior to the start of either the experiment, a temperature logger (DST micro-T ultrasmall temperature logger; Star-Oddi, Reykjavik, Iceland) was placed in the peritoneal cavity of the ferrets. This device recorded body temperature of the animals every 10 min. Ferrets were weighed prior to each immunization (days 0, 21 and 42) and on the days of challenge and euthanasia (days 70 and 74). Animals of groups 1, 2 and 4 were monitored by CT imaging on days 64, 71, 72, 73 and 74. Blood samples were collected prior to the immunization on days 0, 21 and 42, on day 64 and before challenge on day 70.

05) However, for parents in the MMR group, there was a significa

05). However, for parents in the MMR group, there was a significant association between intention and whether or not they had taken their child for the first MMR, χ2(2, n = 144) = 10.182,

exact p = 0.002, two-sided (three cells had expected count less than five). Sequential logistic regression analyses were performed to identify significant predictors of intention for MMR and dTaP/IPV separately. This method was Alisertib used as it is deemed most suitable for when there are theoretical grounds on which to predict the relative importance of variables [20], [24] and [25]. Direct predictors of intentions (attitude; subjective norm;

perceived behavioural control) were entered in the first block. The belief composites (behavioural beliefs; normative beliefs; control beliefs) were entered in the second block, along with the sociodemographic variables that had correlated significantly with intention (first MMR in the case of MMR and number of children in the case of dTaP/IPV). Conner et al. [23] report that by entering the variables in this way the researcher can test whether the effects of the belief composites are mediated by other TPB components. They also argue that by including all components in the model (including those that did not correlate significantly with intention), this provides a more stringent PCI-32765 molecular weight test of the role of any additional variables [23]. Assumptions of logistic regression were validated by examining residuals [24]. For both MMR and dTaP/IPV, there were only a small number of outliers. For MMR, their removal did not alter the results significantly. For dTaP/IPV, the removal of four outliers made a significant difference

to the results and the regression was re-run. For both vaccinations, tolerance values were >0.1 and VIF values were <10, indicating that there was no collinearity between the predictor variables [24]. A total of 144 cases were analysed (three Rutecarpine were deleted due to missing data). To determine the required sample size, Tabachnick and Fidell [20] advocate using N ≥ 50 + 8m (m is the number of predictors) to test the overall fit of the model and N ≥ 104 + m to test the individual predictors within the model. The researchers were interested in the overall correlation and the individual independent variables. In this case, Tabachnick and Fidell [20] recommend calculating N both ways and choosing the larger number of cases. In accordance with their recommendations, a minimum sample size of 111 was necessary. Using a criterion of p ≤ 0.

The acute administration did not alter the mitochondrial complex

4C), amygdala (F(3–16) = 2.451; PFT�� nmr p = 0.10 Fig. 4C) and hippocampus (F(3–13) = 10.168; p = 0.001 Fig. 4C) with imipramine at the dose of 30 mg/kg and in the amygdala (F(3–14) = 10.512; p = 0.001 Fig. 4C) with all treatments, but did not alter in the prefrontal cortex (F(3–15) = 4.175; p > 0.05 Fig. 4C) and in the hippocampus

(F(3–13) = 10.168; p > 0.05 Fig. 4C). The acute administration increased GSK1120212 ic50 the mitochondrial complex IV activity in the hippocampus (F(3–13) = 18.471; p < 0,001 Fig. 4D) with all treatments, compared with saline, but did not alter in the prefrontal cortex (F(3–12) = 0.828; p = 0.50 Fig. 4D) and amygdala (F(3–11) = 4,514; p = 0,27 Fig. 4D). The chronic treatment did not alter the mitochondrial complex IV activity in the prefrontal cortex (F(3–13) = 0.689; p = 0.57 Fig. 4D), amygdala (F(3–16) = 3.666; p = 0.35 Fig. 4D) or hippocampus (F(3–11) = 2.317; p = 0.13 Fig. 4D). The acute treatment decreased the Bcl-2 protein levels in the

prefrontal cortex (F(3–12) = 106.818; p < 0,001 Fig. 5A) and in the hippocampus (F(3–12) = 265,226; p < 0,001 Fig. 5A) with imipramine at the dose of 30 mg/kg and lamotrigine at the dose of 20 mg/kg, and also in the amygdala (F(3–12) = 87.304; p < 0.001 Fig. 5A) with all treatments, compared with saline. The chronic treatment decreased the Bcl-2 protein levels in the prefrontal cortex (F(3–12) = 310.093; p < 0.001 Fig. 5A), amygdala (F(3–12) = 238.818; p < 0.001

Fig. 5A) and hippocampus (F(3–12) = 557.669; p < 0.001 Fig. 5A) with all treatments. The acute treatment nearly increased the AKT protein levels in the prefrontal cortex (F(3–12) = 49.088; p = 0.000 Fig. 5B) with imipramine at the dose of 30 mg/kg, in the amygdala (F(3–12) = 70.335; p < 0.001 Fig. 5B) with lamotrigine at the dose of 20 mg/kg and in the hippocampus (F(3–12) = 21.011; p = 0.009 Fig. 5B), with imipramine at the dose of 30 mg/kg and with lamotrigine at the dose of 20 mg/kg, compared with saline. The acute treatment also decreased the AKT protein levels in the amygdala with imipramine at the dose of 30 mg/kg (F(3–12) = 70.335; p = 0.04 Fig. 5B) and in the hippocampus with lamotrigine at the dose of 10 mg/kg (F(3–12) = 21.011; p = 0.04 Fig. 5B). The chronic treatment increased the AKT protein levels in the prefrontal cortex (F(3–12) = 121.938; p < 0,001 Fig. 5B), amygdala (F(3–12) = 83.853; p < 0.001 Fig. 5A) and hippocampus (F(3–12) = 58.262; p < 0,001 Fig. 5B) after all treatments. The acute treatment decreased the GSK-3 protein levels in the prefrontal cortex with imipramine at the dose of 30 mg/kg and lamotrigine at the dose of 20 mg/kg (F(3–12) = 126.185; p < 0.001 Fig.

For the comparison of inter-genotype neutralization data a heatma

For the comparison of inter-genotype neutralization data a heatmap representation of log10

titers (range 1.0–6.0 log10) was employed with titers below the assay threshold of 20 being censored with a value of 10 (1.0 log10). The phylogenetic relationship between L1 amino acid sequences (neighbor-joining [NJ] tree) and inter-genotype distance matrices (n = 500 bootstrap replicates; heatmap range 0.0–1.0) were created using Mega v4.1 [37]. As both HPV vaccines consistently generate HPV31 cross-neutralizing antibodies following immunization, we used this as a benchmark for selecting an appropriate animal model for our pre-clinical immunization studies. CX-5461 research buy BALB/c mice were immunized intra-muscularly with Cervarix® over a 7 week schedule resulting in a median HPV16 neutralizing antibody titer of 10,416 (IQR 7943–16,862; n = 10) ( Fig. 1). Cross-neutralization of HPV31, however, was only apparent in one mouse (HPV31 titer of 733) with a very high HPV16 neutralizing titer of 543,122. Cervarix® immunization of BALB/c mice sub-cutaneously or intra-muscularly over a 12 week schedule did not elicit neutralizing antibodies against HPV31 (data not shown). Conversely, immunization of NZW rabbits with Cervarix® over the same 12 week schedule generated a median HPV16 neutralizing antibody titer of 40,792 (IQR 28,214–57,869;

n = 8) accompanied by a median HPV31 titer of 152 (IQR 35–346; n = 8). Although differences in dosing levels between mice and rabbits see more may impact on the antibody responses elicited here, HPV31 neutralizing antibody titers generated in rabbits were similar to the titers found in human vaccinees ( Fig. 1) [20], suggesting that NZW rabbits were an appropriate model for examining the generation of cross-neutralizing antibodies TCL following immunization with L1 VLP. NZW rabbits were immunized with L1 VLP representing individual HPV genotypes

from the Alpha-7 and Alpha-9 species groups and the control BPV. As expected, immunization with L1 VLP induced predominantly high titer neutralizing antibodies against the immunizing genotype resulting in a median type-specific titer of 100,287 (IQR 64,478–246,691) (Fig. 2). However, there were several cases wherein L1 VLP elicited antibodies capable of neutralizing pseudoviruses representing other genotypes. Some of these responses were weak and sporadic, while some were of a reasonable titer and consistent between animals in the same group. For example, HPV33 and HPV58 appeared to share common neutralization epitopes resulting in a median reciprocal neutralization titer of 553 (IQR 520–3594). Similarly, although of a lesser magnitude, VLP representing HPV39 and HPV59 also appeared to share common neutralization epitopes. A phylogenetic representation of the amino acid sequences used for the Alpha-7 and Alpha-9 VLP and pseudovirus L1 proteins demonstrates the close relationship between certain genotypes within each of these two species groups (Fig. 3A).

Information on the lessons learnt by Australia and other pioneeri

Information on the lessons learnt by Australia and other pioneering nations, such as the

United Kingdom, where physiotherapists Capmatinib mouse became primary contact practitioners in 1978, is being keenly sought by other WCPT member nations at various stages of this journey to independence. In late 2009 there was an international summit in Washington DC where representatives from every WCPT regional group and over 18 different countries met to identify strategies to advance this agenda. Countries as diverse as Singapore, Jamaica, South Africa, Ireland, and Austria sent representatives who heard presentations on models and evidence to support direct access. There were workshops on establishing direct access services as well as the development of strategies to lobby key stakeholders such as government health departments, regulatory bodies, health professionals and others to bring about the necessary changes to support the implementation of direct access services in WCPT member countries. A key outcome of the meeting was a consensus statement, which noted that: Leaders from 18 countries attending the International Policy Summit on Direct Access

and Advanced Scope of Practice in Physical Therapy endorsed the results of research that clearly demonstrate that patient self-referral to physiotherapy is best for all health systems, whether public or private. Direct access and self-referral allows patients to access physiotherapy as their first choice for rehabilitation.

Crizotinib A physician referral is not required. However, the pathway to independent practice is not so clear cut. In Australia physiotherapists were fortunate that, at the time they became primary contact professionals, there were no legislative hurdles for the profession to overcome. This is not the case in many WCPT member nations in 2010. For example, in the USA direct access has been recognised by only 45 states and the District of Columbia, which means that in the five remaining states the practice too of physical therapy is still contingent upon the prescription or referral of a physician. The American Physical Therapy Association (APTA) is actively lobbying to amend statutes in those remaining states to permit direct access to physical therapy services, as are physiotherapy associations in countries as diverse as Turkey and Japan. However, legislation can be amended and there are many success stories from countries where sustained local advocacy has resulted in legislative changes. One example occurred in 1997 when the Health Professions Council of South Africa verified that it was legally and ethically acceptable for a patient to approach a physiotherapist for treatment without a referral from another health care practitioner.

Information about the used bacterial strains, cattle and aspects

Information about the used bacterial strains, cattle and aspects of bioethics, http://www.selleckchem.com/products/gsk1120212-jtp-74057.html as well as methods for serological analysis (ELISA), preparation of peripheral blood mononuclear cells and flow cytometry, cytokine responses (IFN-γ), and statistical analysis may be found in Supplementary Materials. ELISAs (Fig. 1A) demonstrated that single immunization with the viral construct vaccine formulations did not significantly (P = 0.4–0.9 versus negative control group) increase the GMT of IgG antibodies against

the brucellosis Omp16 and L7/L12 proteins. In contrast, a significant (P < 0.0001) increase in the GMT of IgG antibodies against brucellosis antigens was observed in the positive control group (B. abortus S19) compared to the experimental see more groups during the period of observation. After booster vaccination of the experimental groups of cattle (Fig. 1B) significant accumulation of IgG antibodies against brucella proteins was only observed in animals

vaccinated with Flu-L7/L12-Omp16-MontanideGel01 (P = 0.005 and P = 0.0008 compared to Flu-L7/L12-Omp16 and Flu-L7/L12-Omp16-chitosan, respectively). Despite this, the accumulated IgG antibody titers in the group vaccinated with Flu-L7/L12-Omp16-MontanideGel01 were still significantly lower (P < 0.0001) than the positive control group. It should be noted that the ratios of IgG antibody isotypes in the experimental groups were significantly different to the positive control (B. abortus S19) group. IgG2a antibodies predominated in the cattle from the experimental groups, IgG1 antibodies predominated in the positive control group. Antigen GBA3 specific cellular immune responses were formed, due to the fact that in the samples collected from the animals vaccinated with the viral construct vaccine formulations, the numbers of CD4+ and CD8+ (Fig. 2) cells after stimulation with Brucella L7/L12 and

OMP16 proteins were significantly higher (from P = 0.01 to P < 0.0001) than that of the control samples (without stimulation); the only exception was the Flu-L7/L12-Omp16-chitosan vaccine, in which the number of CD4+ cells after stimulation with Brucella proteins was not significantly different to the control samples after both prime (P = 0.07) and booster (P = 0.27) vaccination. Among the adjuvants tested, only Montanide Gel01 contributed significantly to stimulation of the T-cell immune response. After stimulation with Brucella antigens in vitro, the number of CD4+ and CD8+ cells in the samples from the animals vaccinated with vaccines containing Montanide Gel01 was significantly higher (from P = 0.01 to P = 0.0006) than the other experimental groups, and did not differ significantly to that of the positive control group vaccinated with B. abortus S19 (from P = 0.2 to P = 0.6).

Any subsequent serious event that was considered to be related to

Any subsequent serious event that was considered to be related to LAIV was also reported as an SAE [4]. Assessment

of the relationship between an SAE and LAIV was conducted by KP staff and based upon the temporal relationship of the event to the administration of the vaccine, whether an alternative etiology could be identified, and biological plausibility. Pregnancies were identified by obtaining any pregnancy related MAE within 42 days of vaccination in any setting or any pregnancy related MAE in the ED or hospital setting within 180 days of vaccination. Chart review was GDC-0199 cell line performed on any subject with a pregnancy related visit to verify the pregnancy and obtain outcome information. Information on deaths in Northern California was obtained from KP databases, the State of California death certificate files, and the Social Security Administration Death Master File of all known vaccinees from the start of the study. These databases were cross-referenced with the subject’s medical record. For each incidence rate comparison between LAIV recipients and a control group, a rate ratio was calculated. Rate comparisons of individual MAEs were made for each setting separately; for PSDI, comparisons were made for all settings combined. For MAEs occurring in the hospital setting, any GS-7340 duration of inpatient hospitalization was counted, unlike the ≥24-h requirement

for an SAE. For each control group, rate comparisons were made for each period (3, 21, 42, or 180 days or entire study period), age group (5–8, 9–17 years), setting (clinic, hospital, ED), and dose number for ages 5 to 8 years as outlined

in Table 1. Asthma and wheezing events were of particular interest in this study and were captured in multiple ways. A specific asthma and wheezing analysis was conducted as part of the PSDI analysis through 180 days. The term “asthma/reactive airway disease (RAD)” used in this analysis encompassed the individual diagnoses of asthma, cough variant asthma, and exercise-induced asthma, and the term “wheezing/shortness of breath (SOB)” included the diagnoses of wheezing and dyspnea/SOB. Asthma and wheezing events were also captured as part of the PSDI analysis of acute respiratory tract events Phosphatidylinositol diacylglycerol-lyase in the 21- and 42-day periods. Lastly, individual diagnoses of asthma and wheezing events were analyzed as individual MAEs in each of 3 settings: clinic, ED, and hospital. Event rates were calculated per 1000 person-months. Relative risks (RR) were calculated as the ratio of the incidence rates of the two comparison groups without adjustment for any covariate. Hazard ratios (HR) were also calculated adjusting for matching factors and seasonal changes in background rates. Adjusted hazard ratios were obtained from the Cox proportional hazards model implementing the counting-process style of input [9].