Table 9.

Operational definition and scale of measurement for other independent variables

Variable	Operational definition	Scale of measurement	Source of data
Knowledge about RTS,S	Whether parent/caregiver has ever heard about the malaria vaccine	Binary	Interview
		Yes
		No
	Where parent/caregiver first heard about malaria vaccine	Nominal	Interview
		CWC
		Health facility announcement
		Radio
		Friend/relative
	Knowledge of the number of times a child is supposed to be administered malaria vaccine	Binary	Interview
		Correct number
		Incorrect number
	Knowledge of schedule of malaria vaccine administration	Binary	Interview
		Correct order
		Incorrect order
Perception of vaccines becoming too many	Parent/caregiver thinks vaccines are becoming too many for children with the introduction of malaria vaccine	Binary	Interview
		Yes
		No
Concern about vaccine safety	Heard about any negative issue/report concerning malaria vaccine	Binary	Interview
		Yes
		No
Previous experience with vaccines	Whether child has ever suffered an adverse reaction following the administration of a vaccine	Binary	Interview
		Yes
		No
Accessibility	Minutes spent in reaching nearest CWC	Ratio	Interview
Affordability	Payment for vaccination services	Ratio	Interview
Perception of quality of vaccination service	Description of CWC nurses’ attitude	Ordinal	Interview
		Excellent
		Very good
		Good
		Bad
		Very bad
ANC attendance	Number of times mother attended ANC before delivery of this child	Ratio	Interview
Sex of child	Child being male or female	Nominal	Interview
		Male
		Female
Place of delivery	Where child was delivered	Nominal	Interview
		Home delivery
		Health facility
Time of uptake	Age (in months) at which child was administered any dose of malaria vaccine	Ratio	Child’s CWC card