Comparison of methods of pneumonia surveillance system and birth cohort
| Facility-based pneumonia surveillance system | DCHS Birth cohort15 | |
|---|---|---|
| Time period | June 2012–September 2013 (calendar-year incidence calculation: 1 September 2012–31 August 2013 | 29 May 2012–31 May 2014 |
| Study population | All children <5 years resident in the catchment area; incidence calculated for children <1 year of age | Birth cohort participants in first year of life; 697 infants born between 29 May 2012 and 31 May 2014 |
| Estimation of person-time at risk | Estimated 1292 children <1 year of age from Department of Health population statistics | Calculated for each individual from date of birth until death/disenrolment/first birthday |
| Method of pneumonia case detection | Clinics: PHC nurse identification of IMCI pneumonia at each facility, and basic data collection form completed Hospital: record review of children resident in catchment area attending hospital | Examination by trained study nurse; real-time interview of mother; record review of medical notes Retrospective inclusion of cases: if medical records indicated that they met WHO pneumonia criteria |
DCHS, Drakenstein Child Health Study; ICMI, Integrated Management of Childhood Illness; PHC, primary healthcare.