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Impact of rural hospital closures in Saskatchewan, Canada.

Canada's health care system has undergone major changes since 1990. In Saskatchewan, 52 small rural hospitals funded for less than eight beds stopped receiving funding for acute care services in 1993. Most were subsequently converted to primary health care centers. Since then, concerns have been raised about the impact of the changes on rural residents' access to care, their health status, and the viability of rural communities. To assess the impact of hospital closures on the affected communities, we conducted a multi-faceted, province-wide study. We looked at hospital use patterns, health status, rural residents' perceptions of the impact of these hospital closures, and how communities responded to the changes. We found the hospital closures did not adversely affect rural residents' health status or their access to inpatient hospital services. Despite widespread fears that health status would decline, residents in these communities reported that hospital closures did not adversely affect their own health. Although some communities continue to struggle with changes to health care delivery, others appear to have adapted as a result of strong community leadership, the development of widely accepted alternative services, and local support for creating innovative solutions. Good rural health care does not depend on the presence of a very small hospital that cannot, in today's environment, provide genuinely acute care. It requires creative approaches to the provision of primary care, good emergency services, and good communication with the public on the intent and outcomes of change.

Attitude to Health↗

Anthelmintic use on Saskatchewan pig farms: results from a postal survey.

A postal survey to determine anthelmintic use in Saskatchewan was sent to 580 pig producers in March, 1996. Response rate was 33%. Of all respondents, 76% treated at least some animals. Sows were treated on 90% of farms, weanlings on 86%, boars on 75% and growers on 67%. Injectable treatment with a macrolide was used by more than half the producers. In-feed treatment, with a variety of anthelmintics, was less common and in-water treatment was used least often. The majority of respondents (62%) used a 'planned treatment program'. Although anthelmintic use was widespread, only 48% of producers felt there was a parasite problem on their farm. This was most often determined by the presence of adult worms in feces or poor performance of the pigs. Fecal testing and slaughter checks were used less commonly and primarily on the larger farms. Sources of product information included veterinarians (57%), feed companies (36%), and advertising (24%). Effectiveness (81%) and ease of use (66%) were the major reasons for choosing a particular product; price (16%) was least important. These findings are discussed in the context of current knowledge of the epidemiology of the important enteric nematodes of pigs.

Abattoirs↗

Ascaris suum prevalence and intensity: an abattoir survey of market hogs in Saskatchewan.

Two surveys examining the prevalence and intensity of Ascaris suum were conducted at a Saskatchewan abattoir. In the first, 2500 livers from market weight animals were examined and scored for lesions consistent with ascarid migration. Forty-four percent displayed some degree of scarring with approximately 8% being severely damaged. In the second, both livers and intestinal contents from 500 market weight animals were examined. Seventeen percent were infected with intestinal A. suum (mean of 2.5 parasites per infected pig) and 50% had liver lesions typical of ascarid larval migration. Fifty-three percent of the animals in the second survey had some evidence of ascarid infection (adult parasites, hepatic lesions or both). The results are compared with those from a similar survey conducted in the late 1970s at the same abattoir as well as with surveys conducted elsewhere in Canada and in the UK.

Abattoirs↗

Ascaris suum: seasonal egg development rates in a Saskatchewan pig barn.

This study investigated the effects of seasonal temperature variations on the rate of development to infectivity of Ascaris suum eggs under western Canadian climatic conditions. Flasks containing a suspension of A. suum eggs were placed inside a pig barn located near Saskatoon, Saskatchewan, Canada, at monthly intervals from July 1997 to July 1998. Eggs from each flask were monitored weekly for development to the infective larval stage. Infectivity of eggs was confirmed using a mouse bioassay. Development to the infective stage took three to four weeks in summer when in-barn temperatures were similar to the external ambient temperature. Fall, winter and early spring egg development took longer as in-barn temperatures were cooler. Mid-winter egg development took as long as 11-12 weeks. The in-barn mean temperature during this period was approximately 17 C, close to the development threshold of A. suum eggs. These data are discussed in relation to similar studies from northern Europe and to potential control measures.

Animals↗

Locating community health care centres in rural Saskatchewan: the case of the Living Sky Health District.

Using the Living Sky Health District in rural Saskatchewan as a sample case, this paper illustrates and discusses the use of location theory modelling tools as an aid to achieving high levels of efficiency coupled with administrator-determined levels of access. The paper begins by examining access issues as they affect location decisions. One of the empirical pillars of the paper is the well-documented idea that people will travel great distances in situations of acute circumstances, but are unwilling to travel far for important preventive care and monitoring of some chronic conditions. The study continues by presenting a non-technical overview of location theory which demonstrates the applicability of location modelling to the present problem; several possible location scenarios for Living Sky Health District are calculated, the most appropriate of which will depend on the goals and priorities of the district board. Finally, the study's results and more general conclusions are presented and discussed.

Catchment Area, Health↗

Hospitalizations for aplastic anemia and agranulocytosis in Saskatchewan: incidence and associations with antecedent prescription drug use.

A population-based study to estimate the incidence of hospitalizations for aplastic anemia and agranulocytosis and to evaluate associations between these disorders and antecedent prescription drug use was performed using the Saskatchewan administrative health care databases. Hospital charts and cancer registration data were utilized to apply strict diagnostic criteria to case identification. Estimates of the annual incidence of aplastic anemia and agranulocytosis were 2.7 and 3.0 per million, which are similar to those from other recent population-based studies with comparable case identification criteria. Only a small number of cases were available to evaluate potential drug causes, leading to an analysis of limited power. Nevertheless, significant associations were found between aplastic anemia and tocainide, gold salts, and antidepressants; and between agranulocytosis and anti-thyroids, trimethoprim-sulfamethoxazole, beta-lactams, sulfasalazine, chlorpromazine, carbamazepine, glyburide, and procainamide, although the associations with antibiotics may indicate a response to the disorders rather than a possible cause. These findings are generally consistent with the results of other case-control investigations.

Adolescent↗

Differences in respiratory symptoms and pulmonary function in children in 2 Saskatchewan communities.

BACKGROUND: Asthma prevalence is known to vary among different geographical regions both nationally and internationally. However, there is limited understanding of the nature of differences within geographical regions. OBJECTIVE: To evaluate the prevalence of asthma in 2 prairie communities and differences in the patterns of respiratory symptoms between the communities. METHODS: A cross-sectional questionnaire survey was sent through schools in Estevan and Swift Current, Saskatchewan, to parents of 2,231 children in grades 1 to 6. Asthma prevalence was determined by questionnaire report of physician-diagnosed asthma. Pulmonary function tests (PFTs) using spirometry were conducted in children in grades 1 to 4. To evaluate respiratory morbidity without the use of a diagnostic label, similar comparisons were made between communities for respiratory symptoms. RESULTS: The overall response rate to the survey questionnaire was 91.3%. The prevalence of ever asthma in Estevan was 21.4% (95% confidence interval [CI], 20.1%-22.7%) compared with 16.2% (95% CI, 15.1%-17.3%) in Swift Current. A higher proportion of girls in Estevan (19.7%; 95% CI, 17.9%-21.5%) compared with girls in Swift Current (12.5%; 95% CI, 11.1%-13.9%) reported a history of asthma. There was no difference found between towns for boys. These findings were supported by findings for respiratory symptoms, including wheeze and cough. For both boys and girls, the forced expiratory flow at 25% to 75% of forced vital capacity and the ratio of forced expiratory volume in 1 second to forced vital capacity were lower in Estevan compared with Swift Current. CONCLUSIONS: Differences in the distribution of childhood asthma can be found within regions. These results are strengthened by PFTs and cannot be fully explained by diagnostic biases.

Asthma↗

A cluster-focus of multiple sclerosis at Henribourg, Saskatchewan.

This study presents the clinical characteristics of 8 victims of multiple sclerosis from the hamlet of Henribourg, Saskatchewan with a population of less than 75 people. A diligent victim of the disease had observed that six female classmates from the early 1940's had later developed multiple sclerosis. Two male military personnel who had also resided briefly in close proximity, during the same common exposure time, also later developed multiple sclerosis. The mean onset time of developing the disease after leaving the area was 20 years. This cluster-focus suggests a common exposure to an environmental factor or a common infective agent in the etiology of multiple sclerosis.

Adult↗

Assessment of family needs following acquired brain injury in Saskatchewan.

PRIMARY OBJECTIVE: The objective was to learn what the family members of individuals with acquired brain injury (ABI) perceived as important needs and to what extent these needs are being met. METHODS AND PROCEDURES: Sixty-six individuals who care for someone with an ABI and who receive service from the Saskatchewan South ABI Outreach Team completed the Family Needs Questionnaire (FNQ). MAIN OUTCOMES: An analysis of the importance ratings found that the most important needs were related to health information. Most needs perceived as unmet were related to emotional support. CONCLUSIONS: Caregivers indicated that having honest, accurate comprehensive information regarding the ABI survivor is important. Respondents also indicated that approximately one-half of the needs have gone unmet or only partly met. This study highlights the importance for service providers to assess family needs in order to minimize distress in caregivers, maintenance of the well being of whom is integral in the support of the person with ABI.

Adult↗

2,4-D levels in the South Saskatchewan River in 1973 as determined by GLC method.

2,4-D levels in the South Saskatchewan River near Saskatoon in 1973 at the height of the spraying season, and at harvestime, were determined by a method involving direct glc analysis, ankaline hydrolysis, followed by n-butylation of the liberated free acid after acidification of the alkaline solution, and confirmed by subsequent n-octylation. GC/MS also confirmed the presence of 2,4-D. 2,4-D was detected during the spraying season but not at harvest time or in river mud samples. The average level was ca. 2mug of acid equivalent to 2,4-D per liter of river water at the height of the spraying season.

2,4-Dichlorophenoxyacetic Acid↗

Residues of 2, 4-D in air samples from Saskatchewan: 1966-1975.

Residues of 2,4-D (2,4-dichlorophenoxyacetic acid) in air samples from several sampling sites in central and southern Saskatchewan during the spraying seasons in the 1966-68 and 1970-75 periods were determined by gas-liquid chromatographic techniques. Initially, individual esters of 2,4-D were characterized by retention times and confirmed further by co-injection and dual column procedures. Since 1973, however, only total 2,4-D acid levels in air samples have been determined after esterification to the methyl ester and confirmed by gc/ms techniques whenever possible. Up to 50% of the daily samples collected during the spraying season at any of the locations and during any given year contained 2,4-D, with butyl esters being found most frequently. The daily 24-hr mean atmospheric concentrations of 2,4-D ranged from 0.01 to 1.22 mug/m3, 0.01 to 13.50 mug/m3, and 0.05 to 0.59 mug/m3 for the iso-propyl, mixed butyl and iso-octyl esters, respectively. Even when the samples were analysed for the total 2,4-D content, i.e. from 1973 onwards, the maximum level of the total acid reached only 23.14 mug/m3. In any given year and at any of the sampling sites, about 30% of the samples contained less than 0.01 mug/m3 of 2,4-D. In another 40% of the samples, the levels of 2,4-D ranged from 0.01 to 0.099 mug/m3. Only about 30% of the samples contained 2,4-D concentrations higher than 0.1 mug/m3, with only 10% or less exceeding 1 mug/m3. None of the samples, obtained with the high volume particulate sampler, showed any detectable levels of 2,4-D, indicating little or no transport of 2,4-D adsorbed on dust particles or as crystals of amine salts.

2,4-Dichlorophenoxyacetic Acid↗

An outbreak of trichinellosis due to consumption of bear meat infected with Trichinella nativa, in 2 northern Saskatchewan communities.

In June 2000, bear meat infected with Trichinella nativa was consumed by 78 individuals in 2 northern Saskatchewan communities. Interviews and blood collections were performed on exposed individuals at the onset of the outbreak and 7 weeks later. All exposed individuals were treated with mebendazole or albendazole, and symptomatic patients received prednisone. Confirmed cases were more likely to have consumed dried meat, rather than boiled meat (P<.001). Seventy-four percent of patients completed the recommended therapy, and 87% of patients who were followed up in August 2000 reported complete resolution of symptoms. This outbreak of trichinellosis was caused by consumption of inadequately cooked bear meat contaminated with T. nativa. Apart from clinical symptomatology, blood counts, creatine kinase levels, serology test results, and analysis of the remaining bear meat helped establish the diagnosis. Treatment with antiparasitic drugs and prednisone was beneficial in limiting the severity and duration of the illness.

Adolescent↗

Rodent-associated Bartonella in Saskatchewan, Canada.

Six species of wild rodents were sampled at 10 sites in 2002 and 2003 to determine the prevalence of Bartonella infections in rodent communities near Saskatoon, Saskatchewan, Canada. Isolates were characterized genotypically and compared with isolates found at other locations. Of 104 wild rodents examined, 57% were infected with Bartonella and prevalence within species varied from 49% for Richardson's ground squirrels (Spermophilus richardsonii) to 90% for Franklin's ground squirrels (S. franklinii). Infected rodents were found at all sites. Sequencing of a 379-bp portion of the citrate synthase gene was performed on 54 isolates and revealed 13 distinct genotypes, eight of which had not been described previously. The most common genotype detected in red-backed voles (Clethrionomys gapperi) was 99.1% similar to B. grahamii, a known human pathogen. Two of 10 Franklin's ground squirrels were concurrently infected with multiple Bartonella genotypes. All genotypes, with the exception of one detected in both Franklin's and thirteen-lined ground squirrels (S. tridecemlineatus), were found in only one host, and all genotypes from each species, with the exception of genotypes detected in red-backed voles, clustered together within the same relatedness group, suggesting that at least some Bartonella genotypes are specific to some rodent hosts.

Animals↗

Mortality study of Canadian male farm operators: non-Hodgkin's lymphoma mortality and agricultural practices in Saskatchewan.

A cohort study of the mortality experience (1971-1985) of male Saskatchewan farmers has been conducted. This study involved linkage of records of the almost 70,000 male farmers identified on the 1971 Census of Agriculture and the corresponding Census of Population to mortality records. Pesticide exposure indices for individual farm operators for the year 1970 were derived from the 1971 Census of Agriculture records. Although the cohort as a whole had no excess mortality for any specific causes of death, including non-Hodgkin's lymphoma, significant dose-response relationships were noted between risk of non-Hodgkin's lymphoma and acres sprayed in 1970 with herbicides, as well as with dollars spent on fuel and oil for farm purposes in 1970. Using Poisson regression modeling, we found that relative risks for the highest level of herbicide use (greater than or equal to 250 acres sprayed) and fuel purchased in 1970 (greater than or equal to $900) on farms less than 1,000 acres total area were 2.2 (95% confidence interval = 1.0-4.6) and 2.3 (95% confidence interval = 1.1-4.7), respectively.

Adult↗

Nonsteroidal antiinflammatory drugs and gastrointestinal hospitalizations in Saskatchewan: a cohort study.

We evaluated the association between individual nonsteroidal antiinflammatory drugs (NSAIDs) and gastrointestinal (GI) toxicity in a retrospective cohort study aimed at examining and comparing the incidence of serious gastrointestinal disorders among NSAIDs users. We observed 2,302 GI hospitalizations among diclofenac, indomethacin, naproxen, piroxicam, sulindac, and other NSAIDs users in the province of Saskatchewan, Canada, from 1982 to 1986 for 228,392 persons who contributed 679,075 person-years of follow-up and filled close to 1.5 million NSAID prescriptions. Current NSAID users presented an increased risk of GI hospitalization [rate ratio (RR) = 3.9, 95% confidence interval = 3.5-4.4]. RRs decreased as time since the last prescription increased: 2.2 (1.9-2.6) for recent past users and 1.3 (1.1-1.5) for less recent past users. Among current users, RRs were the highest in indomethacin users (5.1, 4.3-6.0), and the lowest in sulindac users (3.1, 2.3-4.2). All of these results are adjusted for calendar time, sex, and age. Age showed a particularly strong association with the risk of GI hospitalization.

Adolescent↗

Positive predictive value of ICD-9 codes in the identification of cases of complicated peptic ulcer disease in the Saskatchewan hospital automated database.

We examined the positive predictive value of the International Classification of Diseases, 9th revision (ICD-9), codes used to identify cases of complicated peptic ulcer disease from the Saskatchewan Hospital automated database. Nonspecific and site- and lesion-specific codes were used in case detection to increase the sensitivity of the initial computer search. Review of the hospital records of 1,762 potential cases resulted in 1,375 confirmed cases. The positive predictive value of site and lesion-specific codes was about 90% and was about 70% for the nonspecific codes. Almost 50% of cases, however, would have been missed if the nonspecific codes had not been used.

Anti-Inflammatory Agents, Non-Steroidal↗

Evaluation of a teaching workshop for residents at the University of Saskatchewan: a pilot study.

PURPOSE: The University of Saskatchewan College of Medicine in Saskatoon, Canada, has been running a two-day workshop for teachers since 1993 to which both faculty and residents had been invited. Although the design of the workshop is consistent with principles of adult learning, it was important to determine if the workshop effectively helped residents to acquire and then use key teaching skills in real-world situations where they were called on to organize and make presentations. METHOD: This study, conducted in 1998 and 1999 with residents only, used a randomized controlled experiment with third-party ratings of before and after videotaped teaching sessions done in actual performance settings. There were eight residents each in the control and intervention groups. RESULTS: The intervention group made statistically significant and positive changes in two key areas taught in the workshop and showed slight improvement in a third. The changes made by the residents in the intervention group were in presenting the opening "set" (41.4% absolute improvement) and the use of instructional objectives (11.5%). The "body" of their teaching sessions increased slightly (9.3%). The control group held relatively stable. CONCLUSION: While this study demonstrates that the workshop likely made a difference in the teaching performance of the intervention group, the small sample size (eight in each group) and the presence of confounding variables suggest that further research should be conducted.

Curriculum↗

Levels of 226Ra, 210Pb and total U in fish near a Saskatchewan uranium mine and mill.

Radionuclide levels in fish from the Beaverlodge Lake area, Saskatchewan, Canada, varied significantly among lakes, species and tissues, but did not vary with fish sex or age. Fish from lakes affected by an operating uranium mine and mill had radionuclide levels one to two orders of magnitude above levels in fish from an uncontaminated control lake. Concentrations were greatest in white suckers, intermediate in lake whitefish, and low in lake trout. Skin and bone contained the highest radionuclide levels; levels in flesh were much lower. The mean ash-weight concentration of 226Ra in non-control, eviscerated, whole fish was 9.3, 1.8 and 0.8 pCi X g-1 in white suckers, lake whitefish and lake trout respectively. Mean 210Pb levels for those species were 4.0, 1.4 and 0.5 pCi X g-1, while U content was 96.8, 28.2 and 5.8 micrograms X g-1, respectively. Radium-226 content in forage fish ranged from 9.7-70 pCi X g-1. Lead-210 levels ranged from 3.9-55.0 pCi X g-1, while U levels ranged from 15-119 micrograms X g-1. Bioconcentration factors varied among sites, species and tissues. The primary radionuclide transfer pathway appears to be via sediments, either through direct contact or through food organisms. Bottom-feeding species had the highest radionuclide levels while piscivorous fish had the lowest levels. The internal dose rate to non-control fish are comparatively low; any effects are likely to occur at the genetic level.

Animals↗