Recurrence of perinatal death in Northern Tanzania: a registry based cohort study

Table 4 Continuation rate and recurrence risk of perinatal death by characteristics at the first pregnancy

				Perinatal death in a subsequent pregnancy
Characteristic at first birth	Survival of first baby	Continuation rate*	Number at risk	Perinatal deaths (n)	Risk (%)	RR^†	95% CI^‡	p difference of RRs
Preeclampsia
Yes	Per. death	0.27	35	7	20	1.8	0.8 – 3.9	0.20
	No per. death	0.17	136	15	11.0
No	Per. death	0.32	307	24	7.8	3.1	2.1 – 4.7
	No per. death	0.24	4,025	100	2.5
LBW
Yes	Per. death	0.32	160	22	13.8	1.3	0.8 – 1.9	0.02
	No per. death	0.25	531	56	10.5
No	Per. death	0.31	182	9	4.9	3.2	1.6 – 6.1
	No per. death	0.19	3,620	59	1.6
Preterm birth
Yes	Per. death	0.32	126	17	13.5	1.3	0.8- 2.1	0.01
	No per. death	0.23	484	48	9.9
No	Per. death	0.33	216	14	6.5	3.9	2.2 - 7.0
	No per. death	0.19	3,677	67	1.8
C/section
Yes	Per. death	0.33	120	11	9.2	2.5	1.4 – 4.6	0.30
	No per. death	0.20	1,331	48	3.6
No	Per. death	0.31	222	20	9.0	3.8	2.4 – 6.1
	No per. death	0.19	2,830	67	2.4
Induced labour
Yes	Per. death	0.37	165	12	10.3	2.2	1.2 – 3.9	0.07
	No per. death	0.25	1,628	54	3.3
No	Per. death	0.27	177	19	10.7	4.4	2.7– 7.1
	No per. death	0.17	2,533	61	2.4
ANC visits
>= 5	Per. death	0.41	90	5	5.6	3.4	2.4 – 4.9	0.25
	No per. death	0.23	1,784	45	2.5
<5	Per. death	0.29	252	26	10.3	6.7	1.9 – 7.6
	No per. death	0.17	2,377	70	2.9
Infections
Yes	Per. death	0.32	129	13	10.1	4.5	2.6 – 7.7	0.17
	No per. death	0.20	1,776	40	2.6
No	Per. death	0.31	213	18	8.5	2.7	1.6 – 4.4
	No per. death	0.18	2,385	75	3.1

*Proportion of women with a second birth.
†RR: adjusted relative risk adjusted for maternal age and education attainment.
‡CI: confidence interval from log-binomial models accounting for correlation between successive deliveries of the same mother.

ISSN: 1471-2393