Effect modifiers | Rationale |
---|---|
Prior MV status | Prior MV administration may lead to a larger reduction in non-accidental mortality/non-accidental morbidity than no prior MV administration [13, 14, 39, 40] |
Sex | Girls may experience a larger reduction in non-accidental mortality/non-accidental morbidity than boys [40,41,42,43] |
Season | Enrolment in the dry season may lead to a larger reduction in non-accidental mortality/non-accidental morbidity than enrolment in the rainy season [29, 44] |
Campaigns with other health interventions | Vitamin A may amplify a beneficial non-specific effect [45]. Inactivated meningitis A and inactivated polio vaccination [42], and oral polio vaccination [17, 46], may neutralize/invert a between cluster difference. Participation status will be assigned on an ecological level, assuming that children eligible for campaigns with other health interventions receive these interventions on the campaign dates. |