Traoré 1994a BUR.
| Methods | Case‐control study | |
| Participants | Cases: children aged ≤ 36 months, resident in Bobo‐Dioulasso and admitted to hospital at Sanou Souro Hospital during the period of the study, with symptoms which included diarrhoea or dysentery, or both, as reported by the mother, n = 757 (1056 cases in total but 28% LTFU), 49% < 12 months, 45% girls Hospital controls: any child aged ≤ 36 months, resident in Bobo‐Dioulasso and admitted to hospital at Sanou Souro Hospital during the period of the study without symptoms of diarrhoea or dysentery, n = 631 (72% follow‐up), 40% < 12 months, 46% girls Neighbourhood controls: these were neighbours of children admitted to hospital with symptoms of diarrhoea or dysentery, or both, matched for age group, n = 1405, 47% < 12 months, 53% girls |
|
| Interventions | Risk factors of interest:
|
|
| Outcomes | Diarrhoea: as reported by mother and examined by a doctor; dysentery: bloody or mucoid stools | |
| Notes | Location: urban Bobo‐Dioulasso, Burkina Faso Length of recruitment: 2.5 months (15 January 1990 to 31 March 1991) Publication status: journal |
|
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Random sequence generation (selection bias) | Unclear risk | NA |
| Allocation concealment (selection bias) | Unclear risk | NA |
| Blinding of participants and personnel (performance bias) All outcomes | Unclear risk | NA |
| Blinding of outcome assessment (detection bias) All outcomes | Unclear risk | NA |
| Incomplete outcome data (attrition bias) All outcomes | Unclear risk | NA |
| Selective reporting (reporting bias) | Unclear risk | NA |
| Other bias | Unclear risk | NA |
| Similarity of baseline outcome measurements | Unclear risk | NA |
| Similarity of baseline characteristics | Unclear risk | NA |
| Adequate allocation of intervention concealment during the study | Unclear risk | NA |
| Adequate protection against contamination | Unclear risk | NA |
| Confounders adequately adjusted for in analysis/design | Unclear risk | NA |
| Recruitment bias | Unclear risk | NA |
| Baseline imbalance | Unclear risk | NA |
| Loss of clusters | Unclear risk | NA |
| Incorrect analysis | Unclear risk | NA |