Fig. 4

Using the results of the linear model (Table 5) we ran a geographically weighted regression to assess spatial trends in the associations with mean age at marriage at the village level using proportion of girls who do agricultural work and the mean age difference between spouses as the primary predictors. Note that the full model explains a greater proportion of the variance in mean age at marriage in the Zarma-dominated areas in the west compared to the Hausa-dominated areas in the east