scholarly journals A Canadian Multicentre Case-Control Study of SporadicEscherichia coli0157:H7 Infection

1999 ◽  
Vol 10 (2) ◽  
pp. 117-121 ◽  
Author(s):  
Donna Holton ◽  
Jeff Wilson ◽  
Andrea Ellis ◽  
David Haldane ◽  
Nicole April ◽  
...  
Keyword(s):  
Risk Factors ◽  
Odds Ratio ◽  
Case Control Study ◽  
Population Attributable Fraction ◽  
Ground Beef ◽  
Case Control ◽  
Attributable Fraction ◽  
Personal Hygiene ◽  
E Coli ◽  
Control Study

OBJECTIVE: To evaluate further risk factors forEscherichia coli0157:H7 infection including consumer preferences related to the consumption of ground beef and the role of person-to-person transmission of this infection.PATIENTS AND METHODS: A case-control study of sporadicE coli0157:H7 infection was undertaken in five Canadian cites from June to December 1991. One hundred cases ofE coli0157:H7 infection were age- and sex-matched to 200 neighbourhood controls. Cases and controls were interviewed face-to-face to obtain information on potential risk factors for infection and health outcomes. Daycare providers of case and control children were interviewed regarding risk factors for infection at the institutional level. Contacts of cases and controls who reported diarrhea in the seven days before the case onset date were also interviewed about their symptoms and risk factors.RESULTS: All cases had diarrhea during the course of their illness and 90 (90%) reported bloody diarrhea. Four (4%) were reported to have developed hemolytic uremic syndrome; however, there were no fatalities. Sixty-one (61%) of patients were hospitalized. Two variables were associated with infection in the final conditional logistic regression model: eating pink hamburger patties (odds ratio = 12.4, P=0.0001, population attributable fraction =40.2%) and contact with a nonhousehold member suffering from diarrhea (odds ratio = 7.0, P=0.0054, population attributable fraction = 10.3%) in the seven days before illness. Forty per cent of cases and controls who indicated that they prefer well done hamburgers said they would eat a ‘pink’ hamburger if served to them rather than ask that the hamburger be cooked longer.CONCLUSIONS: Health care workers should remain vigilant in their efforts to educate the public as to the risks associated with the consumption of ground beef that is inadequately cooked, and the importance of personal hygiene in the prevention of enteric illness.

scholarly journals Parental risk factors for congenital diaphragmatic hernia – a large German case-control study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Felicitas Schulz ◽  
Ekkehart Jenetzky ◽  
Nadine Zwink ◽  
Charlotte Bendixen ◽  
Florian Kipfmueller ◽  
...  
Keyword(s):  
Risk Factors ◽  
Confidence Interval ◽  
Environmental Risk ◽  
Odds Ratio ◽  
Alcohol Intake ◽  
Case Control Study ◽  
Case Control ◽  
Parental Risk Factors ◽  
Healthy Control ◽  
Control Study

Abstract Background Evidence for periconceptional or prenatal environmental risk factors for the development of congenital diaphragmatic hernia (CDH) is still scarce. Here, in a case-control study we investigated potential environmental risk factors in 199 CDH patients compared to 597 healthy control newborns. Methods The following data was collected: time of conception and birth, maternal BMI, parental risk factors such as smoking, alcohol or drug intake, use of hairspray, contact to animals and parental chronic diseases. CDH patients were born between 2001 and 2019, all healthy control newborns were born in 2011. Patients and control newborns were matched in the ratio of three to one. Results Presence of CDH was significantly associated with maternal periconceptional alcohol intake (odds ratio = 1.639, 95% confidence interval 1.101–2.440, p = 0.015) and maternal periconceptional use of hairspray (odds ratio = 2.072, 95% confidence interval 1.330–3.229, p = 0.001). Conclusion Our study suggests an association between CDH and periconceptional maternal alcohol intake and periconceptional maternal use of hairspray. Besides the identification of novel and confirmation of previously described parental risk factors, our study underlines the multifactorial background of isolated CDH.

Risk Factors for Measles Vaccine Failure Among Immunized Students

PEDIATRICS ◽  
1985 ◽  
Vol 76 (4) ◽  
pp. 518-523
Author(s):  
Harry F. Hull ◽  
Jean M. Montes ◽  
Patricia C. Hays ◽  
Robert L. Lucero
Keyword(s):  
Risk Factors ◽  
School System ◽  
Odds Ratio ◽  
Case Control Study ◽  
Case Control ◽  
Measles Vaccine ◽  
Vaccine Failure ◽  
Control Study

An outbreak of measles occurred in a municipal school system which had reported 98% of students immunized against measles. A case-control study was conducted to determine reasons for vaccine failure Vaccine failure was associated with immunizations that could not be documented in the provider's records. Among children with provider-documented immunization, vaccine failure was associated with vaccination at 12 to 14 months of age with an odds ratio of 4.73. Among children vaccinated at 15 months or older, vaccine failure was not associated with time elapsed since vaccination. Studies should be conducted to determine whether unreliable immunization records are a more widespread problem. Further consideration should be given to routine revaccination of children previously vaccinated at 12 to 14 months of age.

scholarly journals Risk Factors for Herpes Zoster Infection in Patients With Chronic Kidney Disease: A Case-control Study

2021 ◽  
Author(s):  
Qiao Wang ◽  
Jiahui Ma ◽  
Zhenxing Li ◽  
Zhi Li ◽  
Dong Huang ◽  
...  
Keyword(s):  
Risk Factors ◽  
Chronic Kidney Disease ◽  
Herpes Zoster ◽  
Kidney Disease ◽  
Odds Ratio ◽  
Case Control Study ◽  
Immunosuppressive Agents ◽  
Tertiary Hospital ◽  
Case Control ◽  
Control Study

Abstract Background: Chronic kidney disease (CKD) increases the susceptibility to the infection of herpes zoster (HZ). Less is known about the risk factors of HZ in CKD patients.Methods and Participants: This is a case-control study. CKD patients diagnosed with HZ infection between January 2015 and October 2020 in a tertiary hospital were identified. One age- and gender- matched control was paired for each case, matched to the date of initial HZ diagnose. The uni- and multivariate analysis were used to evaluate the risk factors for development of HZ in CKD patients.Results: Forty-six HZ patients and controls were identified. In general, about 80% (72 out of 92) patients were classified at end-stage renal disease (ESRD, CKD Ⅳ to Ⅴ). Multivariate analyses revealed that immunosuppressive agents (odds ratio: 12.50, 95% CI: 1.53-102.26, P=0.021) and dialysis (odds ratio: 3.33, 95% CI: 1.13-9.78, P=0.029) were independent risk factors of HZ in patient with CKD. Conclusion: Immunosuppressive medication and dialysis were associated with HZ infection in CKD. Further guideline may highlight the necessity of zoster vaccine for patients with CKD, who undertake immunosuppressive or dialysis treatment.

scholarly journals Risk factors for sporadic Campylobacter infection: an all-Ireland case-control study

2009 ◽  
Vol 14 (7) ◽  
Author(s):  
K Danis ◽  
M Di Renzi ◽  
W O’Neill ◽  
B Smyth ◽  
P McKeown ◽  
...  
Keyword(s):  
Risk Factors ◽  
Case Control Study ◽  
Population Attributable Fraction ◽  
Case Control ◽  
Control Measures ◽  
Safety Education ◽  
First Case ◽  
The Republic ◽  
Campylobacter Infection ◽  
Control Study

We report the findings of the first case-control study conducted in both the Republic of Ireland and Northern Ireland to determine risk factors for sporadic Campylobacter infections. A total of 197 cases and 296 case-nominated controls matched for age, were included. Based on Population Attributable Fraction (PAF), the most important risk factors were consuming chicken [adjusted matched (am) OR 6.8; 95%CI 2.1-21.9], consuming lettuce (amOR 3.3; 95%CI 1.5-7.1) and eating in takeaways (amOR=3.1; 95%CI 1.4-6.6). Contact with sheep (amOR=11; 95%CI 1.6-78), peptic ulcer (amOR=19; 95%CI 3.8-93.7), hiatus hernia (amOR=20.3; 95%CI 2.3-183.3), lower bowel problems (amOR=4.5; 95%CI 1.2-16.8) were also independently associated with infection. Mains water supply showed protective effect (amOR=0.2; 95 CI 0.1-0.9). The findings highlight the continued need for consumer food safety education and further control measures throughout the food chain on the island of Ireland.

scholarly journals Risk factors for campylobacter infection in infants and young children: a matched case-control study

2001 ◽  
Vol 127 (3) ◽  
pp. 399-404 ◽  
Author(s):  
T. D. TENKATE ◽  
R. J. STAFFORD
Keyword(s):  
Risk Factors ◽  
Odds Ratio ◽  
Case Control Study ◽  
Case Control ◽  
Age Group ◽  
Matched Case ◽  
Campylobacter Infection ◽  
Matched Case Control Study ◽  
Control Study ◽  
Infants And Young Children

Campylobacter infection has one of the highest rates of all the notifiable diseases in Australia, with a peak in children aged 0–35 months. A matched case-control study was conducted to investigate risk factors for campylobacter infection for children in this age group. Eighty-one cases and 144 controls were enrolled in the study that was conducted between 24 January 1996 and 21 January 1997. The following risk factors were found to be independently associated with illness: ownership of pet puppies (adjusted odds ratio [OR] 16·58, 95% confidence interval [CI] 3·73–73·65) and pet chickens (OR 11·80, CI 1·37–101·75), and consumption of mayonnaise (OR 4·13, CI 1·61–10·59). We propose that children aged less than 3 years are at risk of campylobacter infection if residing in a household which has puppies or chickens as pets.

scholarly journals Risk Factors for Infection with Escherichia coli in Nursing Home Residents Colonized with Fluoroquinolone-Resistant E. coli

2015 ◽  
Vol 36 (5) ◽  
pp. 575-577 ◽  
Author(s):  
Sara Manning ◽  
Ebbing Lautenbach ◽  
Pam Tolomeo ◽  
Jennifer H. Han
Keyword(s):  
Risk Factors ◽  
Escherichia Coli ◽  
Nursing Home ◽  
Case Control Study ◽  
Urinary Catheter ◽  
Nursing Home Residents ◽  
Case Control ◽  
Clinical Infection ◽  
E Coli ◽  
Control Study

A case-control study to determine risk factors for clinical infection with Escherichia coli was conducted among nursing home residents colonized with fluoroquinolone-resistant E. coli. Among 94 subjects, 11 (12%) developed infections with E. coli. Risk factors included the presence of a urinary catheter or tracheostomy, diabetes mellitus, and trimethoprim-sulfamethoxazole exposure.Infect Control Hosp Epidemiol 2015;00(0): 1–3

A case-control study of risk factors of chronic venous ulceration in patients with varicose veins

2017 ◽  
Vol 33 (1) ◽  
pp. 60-67 ◽  
Author(s):  
Gohar Abelyan ◽  
Lusine Abrahamyan ◽  
Gayane Yenokyan
Keyword(s):  
Risk Factors ◽  
Confidence Interval ◽  
Odds Ratio ◽  
Case Control Study ◽  
Varicose Veins ◽  
Case Control ◽  
Sitting Time ◽  
Venous Ulceration ◽  
History Of ◽  
Control Study

Background/objectives Venous ulcers carry psychological and high financial burden for patients, causing depression, pain, and limitation of mobility. The study aimed to identify factors associated with an increased risk of venous ulceration in patients with varicose veins in Armenia. Methods A case-control study design was utilized enrolling 80 patients in each group, who underwent varicose treatment surgery in two specialized surgical centers in Armenia during 2013–2014 years. Cases were patients with varicose veins and venous leg ulcers. Controls included patients with varicose veins but without venous leg ulcers. Data were collected using interviewer-administered telephone interviews and medical record abstraction. Multiple logistic regression analysis was used to identify the risk factors of venous ulceration. Results There were more females than males in both groups (72.5% of cases and 85.0 % of controls). Cases were on average older than controls (53.9 vs. 39.2 years old, p ≤ 0.001). After adjusting for potential confounders, the estimated odds of developing venous ulcer was higher in patients with history of post thrombotic syndrome (odds ratio = 14.90; 95% confidence interval: 3.95–56.19; p = 0.001), with higher average sitting time (odds ratio = 1.32 per hour of sitting time; 95% confidence interval: 1.08–1.61; p = 0.006), those with reflux in deep veins (odds ratio = 3.58; 95% confidence interval: 1.23–10.31; p = 0.019) and history of leg injury (odds ratio = 3.12; 95% confidence interval: 1.18–8.23; p = 0.022). Regular exercise in form of walking (≥5 days per week) was found to be a protective factor from venous ulceration (odds ratio = 0.26; 95% confidence interval: 0.08–0.90; p = 0.034). Conclusion We found that reflux in deep veins, history of leg injury, history of post thrombotic syndrome, and physical inactivity were significant risk factors for venous ulceration in patients with varicose veins, while regular physical exercise mitigated that risk. Future studies should investigate the relationships between the duration and type of regular exercise and the risk of venous ulceration to make more specific recommendations on preventing ulcer development.

scholarly journals Determinants of maternal deaths amongst mothers who suffered from post-partum haemorrhage: a community-based case control study

2018 ◽  
Vol 5 (7) ◽  
pp. 2814
Author(s):  
Divya Khanna ◽  
Jai Veer Singh ◽  
Monika Agarwal ◽  
Vishwajeet Kumar
Keyword(s):  
Risk Factors ◽  
Rural Areas ◽  
Odds Ratio ◽  
Case Control Study ◽  
Case Control ◽  
Bivariate Analysis ◽  
Paired Data ◽  
Community Based ◽  
Maternal Deaths ◽  
Control Study

Background: The WHO estimates that, of the 529 000 maternal deaths occurring every year 136 000 take place in India amongst which postpartum haemorrhage (PPH) being the most (29.6%) commonly reported complication. However deaths from PPH can be prevented. The purpose of this study was to identify the risk factors contributing to maternal deaths amongst women who develop PPH.Methods: This was a community based paired case-control study done in rural areas of Lucknow, UP (India) done in a period of one year. Thirty-one maternal deaths due to PPH (cases) were matched and compared with two mothers who survived from PPH (controls). Data was analysed using SPSS version 17.0 and Open Epi version 2.3. The appropriate significance test was applied using MacNemar test for paired data. Risk factors obtained significant in bivariate analysis were subjected to conditional multiple logistic regressions for adjustment and controlling the effect of confounding variables. Results have been given in form of unadjusted Odds ratio (UOR) and adjusted Odds ratio (AOR).Results: It was seen that the mothers who had taken ≥4 antenatal visits during the index pregnancy had a protective effect against deaths due to PPH. Home delivery raised the odds of death by seven times.Conclusions: Deaths due to PPH can be reduced by ensuring institutional delivery, good antenatal care and better referral facilities, especially for mothers from weaker sections of society.

scholarly journals 1434. Risk Factors for Community-Acquired Urinary Tract Infections Caused by Extended-Spectrum β-Lactamase (ESBL) Producing Escherichia coli in Children: A Case–Control Study

2019 ◽  
Vol 6 (Supplement_2) ◽  
pp. S523-S524
Author(s):  
Frank Zhu ◽  
Rodado Maria ◽  
Basim Asmar ◽  
Hossein Salimnia ◽  
Ronald Thomas ◽  
...  
Keyword(s):  
Risk Factors ◽  
Escherichia Coli ◽  
Case Control Study ◽  
Case Control ◽  
Antibiotic Usage ◽  
Ethnic Background ◽  
E Coli ◽  
Tract Infections ◽  
Control Study

Abstract Background In recent years, there has been an increasing incidence of community-acquired urinary tract infections (UTI) caused by extended-spectrum β-lactamase (ESBL) producing Escherichia coli. However, the risk factors of ESBL-producing bacteria in community-acquired (CA)-UTI in children in the USA remain unclear. Methods A retrospective case–control study of UTI due to CA-ESBL-producing E. coli during a 5-year period (2011–2016) was performed. Control cases of non-ESBL-producing E. coli UTI were matched by age, gender, and year of infection. Medical records were manually reviewed to collect data for potential risk factors for ESBL-positive infection. Results A total of 111 patients with ESBL-producing E coli UTI and 103 control patients were included. The proportion of ESBL-producing E coli UTI ranged from 7% to 15% per year. The median age was 4 years with female predominance (84%). The ESBL group was predominantly African American (32%) followed by patients of Middle Eastern (ME) ethnic background (31%). Risk factors by univariate analysis were vesicoureteral reflux (VUR): (20.9 ESBL group vs. 6% controls; P = 0.002), prior antibiotic usage in the previous 3 months (including β-lactams), prior UTI (last 3 months), recent hospitalization (last 3 months) and ME ethnic background. However, multivariate analysis showed that only prior antibiotic usage (P = 0.001) and ME ethnic background (P < 0.001) remained statistically significant. 18% (11/60) of patients exposed to prior antibiotic use in the ESBL group were on long-term antibiotic prophylaxis for VUR. Conclusion Risk factors for CA-ESBL-producing E coli UTI in children were: (1) antibiotic usage within the previous 3 months and (2) ME background. Prior antibiotic usage as a risk factor reinforces the need for judicious use of antibiotics. The high percentage of patients in this group (18%) receiving long-term antibiotic prophylaxis for VUR warrants further study as this practice may increase the prevalence of ESBL-producing infections in a population at high risk for UTI. The increased risk among children of ME ethnic background warrants further study to evaluate possible additional associated risk factors such as recent international travel or contact with international travelers. Disclosures All authors: No reported disclosures.

scholarly journals Risk factors for human cysticercosis morbidity: a population-based case-control study

1997 ◽  
Vol 119 (2) ◽  
pp. 231-235 ◽  
Author(s):  
W. CAO ◽  
C. P. B. VAN DER PLOEG ◽  
J. XU ◽  
C. GAO ◽  
L. GE ◽  
...  
Keyword(s):  
Risk Factors ◽  
Case Control Study ◽  
Taenia Solium ◽  
Population Based ◽  
Case Control ◽  
Personal Hygiene ◽  
Prevalence Survey ◽  
History Of ◽  
Behavioural Factors ◽  
Control Study

A population-based case-control study to determine social and behavioural risk factors for Taenia solium cysticercosis in humans was carried out in a rural area, Shandong province, China. Forty-eight cases with cysticercosis were ascertained through a prevalence survey conducted among 7281 persons in 1993. For each case, four controls residing in the same village and matched for age and sex were randomly selected. Information regarding demographic, social and behavioural factors was collected during house visits through interviews and direct observation. Risk factors strongly associated with human cysticercosis included poor personal hygiene, being unable to recognize cysticerci-containing meat, poor pig-raising practices and a history of passing tapeworm proglottides. The results indicate that health education in combination with chemotherapy for taeniasis is required for the control of cysticercosis in humans.

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