highly significantP < 0.001
To further investigate the effect of storage conditions on AS content after 36 months, a three-factor ANOVA (site, lighting, and packaging) showed no significant main effect for the site (LSHTM/Ghana) factor ( F 1,280 < 1, nonsignificant [ns]), no significant main effect for the lighting factor ( F 1,280 < 1, ns); however, the main effect for the packaging factor (perforated/intact) was highly significant ( F 1,280 = 62, P < 0.001).