Potential effect modification of RTS,S/AS01 malaria vaccine efficacy by household socio-economic status

BMC Public Health

Table 4 Incidence rate ratio of clinical malaria for each SES stratum

Parameter	Unadjusted			Adjusted
Parameter	Protective Efficacy (Percent)	95% CI	P-Value	Protective Efficacy (Percent)	95% CI	P-Value
Low SES	35.65	25.04–44.76	< 0.001	32.64	21.75–42.01	< 0.001
Medium SES	35.75	22.28–46.89	< 0.001	36.11	22.89–47.06	< 0.001
High SES	60.83	48.79–70.03	< 0.001	60.01	47.94–69.29	< 0.001

Wald test and P-value for an interaction effect between participant’s SES and the treatment groups for the unadjusted model was (χ² = 10.99, P-value = 0.0041) and was (χ² = 11.74, P-value = 0.0028) for the adjusted model

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