Tools
In all rounds of surveys, trained field investigators administered pretested bilingual questionnaires to pregnant and MU2 women through face-to face computer-assisted personal interviews (CAPI). This data collection application used in the CAPI ensures quality data collection in timely manner with inbuilt soft and hard checks. Further, the quality control checks on several issues including ANC services were done for 10 percent of the sampled women in every state and in each round to maintain the quality of the data.