. 2016 Dec 23;6(12):e013335. doi: 10.1136/bmjopen-2016-013335

Table 2.

The mortality rates and mortality rate ratio (MRR) of recipients of two-dose MV compared with one-dose MV in relation to the administration of campaign-OPV-before-enrolment, overall and by number of doses

	Mortality rates (deaths/person-days)		MRR (2-dose/1-dose MV) (95% CI)
	Early 2-dose group	1-dose group	MRR (2-dose/1-dose MV) (95% CI)
No campaign-OPV-before-enrolment	1.11 (41/1 354 117)	1.88 (131/2 542 844)	0.60 (0.42 to 0.85)*
Campaign-OPV-before-enrolment	1.69 (17/368 371)	1.45 (28/705 350)	1.16 (0.64 to 2.13)*
1-dose OPV	1.23 (4/118 730)	1.68 (10/217 279)	0.72 (0.23 to 2.31)
2-dose OPV	1.90 (13/249 641)	1.35 (18/488 071)	1.42 (0.70 to 2.90)

Notes: The estimates are based on a Cox proportional hazards model; to be precise, we have reported person-days and not person-years.

*Test for whether the effect of early two-dose MV is equal in those receiving no campaign-OPV-before-enrolment and those receiving campaign-OPV-before-enrolment, p=0.06.

MV, measles vaccine; OPV, oral polio vaccine.