Table 1: Characteristics of included studies.

Author(s)	Study Design	Region	Study Setting	Study Population	Sample Size N = 6,439
Adeneye, et al. [16]	Cross-sectional	South-West	Community-based	Pregnant women and Mothers of under-5 children	N = 495
Iyaniwura, et al. [18]	Cross-sectional	South-West	Hospital-based	Health Workers	N = 263
Ordinioha [19]	Cross-sectional	South-South	Community-based	Under-5 Children	N = 170
Onyemaechi, et al. [11]	Cross-sectional	South-East	Community-based	Caregivers of Under-5 Children	N = 389
Aribodor, et al. [13]	Randomized Control Trial	South-East	Community-based	Household (General population)	N = 100
Oyedeji, et al. [24]	Prospective	South-West	Hospital-based	Children (3 Months-13 Years)	N = 300
Esimai and Aluko [4]	Cross-sectional	South-West	Community-based	Caregivers of Under-5 Children	N = 200
Gobir, et al. [3]	Cross-sectional	North-West	Community-based	General Population	N = 686
Amoran, et al. [12]	Cross-sectional	South-South	Community-based	Youth corps members	N = 656
Israel, et al. [5]	Cross-sectional	South-West	Community-based	Caregivers and Mothers of Under-5 Children	N = 1020
Asuquo, et al. [2]	Cross-sectional	South-South	Community-based	Pregnant women and mothers of Under-5 Children	N = 225
Aina and Ayeni [17]	Cross-sectional	South-West	Hospital-based	Pregnant women	N = 211
Musa, et al. [20]	Cross-sectional	North-Central	Hospital-based	Pregnant women	N = 455
Komomo, et al. [21]	Cross-sectional	South-South	Community-based	Households	N = 440
Edelu, et al. [22]	Cross-sectional	South-East	Hospital-based	Children (2 months-11 years)	N = 230
Nalley, et al. [23]	Cross-sectional	South-South	Community-based	Under-5 Children	N = 399
Uzoamaka, et al. [14]	Cross-sectional	South-East	Community-based	Rural households	N = 200