Table 1.

Variables used to understand the impact of SP interventions on head circumference among 6720 live newborns, born between May and November 2015

Variable name	Definition
Head_circum	Head circumference, at birth, in mm	n = 6720 Continuous
Girl	1 = Female	n = 6712
	0 = Male
SPFREQ	0,1,2, 3 + doses of SP	n = 6720
Intervention	1 = DANGE SHUNI, Goronyo or Silame LGA, where community based SP distribution occurred	n = 6720
	0 = Yabo, where no community based SP distribution occurred
Primi	1 = Primigravida	n = 6711
	0 = Multigravida
Month of birth	April–November 2015	In the unadjusted analyses, all earlier months are compared to November. In the adjusted analyses, this variable was used as a continuous variable n = 6720
Gestational age at birth (months)	2 = 10	n = 6719
	1 = 9
	0 = 8