Data collection
FAO
MAY
Surveys were conducted by trained data collection officers using face‐to‐face interviews. All data were collected using tablet‐based Open Data Kit (ODK) software (Hartung et al., Data on livestock ownership before the intervention and baseline household characteristics were extracted from the household listing and baseline surveys. Poultry production and management indicators were collected three times during surveillance rounds from May to August (2017 to 2019). Annually, each woman was asked about the number of adult chickens or ducks she owned, the number of eggs laid by her poultry in the past week, when she had last vaccinated her poultry, and whether she owned a poultry shed. Enumerators also conducted observations of whether the shed was improved or traditional and whether it was actually used for poultry.Data on women's diets in the prior 24 h were collected every 6 months during the routine assessment period, with one‐third of women surveyed every round (i.e., 2 months). Data on children's diets were collected every 2 months up to 18 months of age and every 6 months thereafter, up to shortly after 3 years of age. At endline, diet data were collected from all women and their children under 24 months of age. Women's and children's diets were measured using a dietary diversity assessment. Briefly, women were asked to recall all the foods they had consumed in the previous day and night. Recalled food items were classified into 21 food groups by the enumerator who then inquired about groups not mentioned to verify that no food groups were missed (FAO and FHI 360, 