Table 1 Trial outcomes and indicators on the impact pathway
CAPPT trial outcomes | Effect measure to compare arms/summary statistic |
|---|---|
Primary outcome at 30 ± 2 weeks | |
Haemoglobin concentration ascertained from a Hemocue 301+ analyser reading (Hb g/dL) | Difference/mean |
Secondary outcomes at 30 ± 2 weeks | |
Prevalence of anaemia (% Hb< 11.0 g/dL) | Odds ratio/proportion |
Mid-upper arm circumference (cm) | Difference/mean |
Mean probability of adequacy (MPA) of 11 micronutrients including vitamin A, riboflavin (B2 ), niacin (B3 ), pyridoxine (B6 ), cobalamin (B12 ), thiamine (B1 ), folate (B9 ), vitamin C, iron, zinc and calcium; | Difference/mean |
Total number of ANC visits a health facility | Ratio/mean |
Indicators on the pathway to impact to be compared between arms at 30 ± 2 weeks | |
IFA tablets consumed by time of measurement at 30 ± 2 weeks | Ratio/mean |
Usual energy intake (kcal/day) | Difference/mean |
Usual dietary iron intake (excluding supplements) (mg/day) | Difference/mean |
Uptake of methods used to improve bioavailability | Ratio/mean |
Nutrition knowledge score | Ratio/count |