Determinants and consequences of short birth interval in rural Bangladesh: a cross-sectional study

Table 2 Exposure models of adverse outcomes of pregnancy by birth interval

Birth interval (months)	N	Events		Crude OR*	95% CI		Adjusted OR ^†	95% CI
		N	/1,000
Adverse outcome of pregnancy
>45	3,173	143	45.1	reference			reference
33-44	1,030	54	52.4	1.19	0.86	1.65	1.21	0.87	1.70
21-32	879	42	47.8	1.07	0.75	1.52	1.13	0.78	1.65
<21	489	44	90.0	2.12	1.49	3.03	2.23	1.51	3.29
Perinatal mortality
>45	3,173	124	39.1	reference			reference
33-44	1,030	50	48.5	1.29	0.92	1.82	1.31	0.92	1.87
21-32	879	37	42.1	1.09	0.75	1.59	1.15	0.77	1.71
<21	489	41	83.8	2.31	1.60	3.35	2.33	1.55	3.50
Still birth rate
>45	3,173	79	24.9	reference			reference
33-44	1,030	28	27.2	1.09	0.70	1.69	1.10	0.70	1.73
21-32	879	19	21.6	0.85	0.51	1.42	0.92	0.54	1.56
<21	489	25	51.1	2.10	1.32	3.33	2.13	1.28	3.53
Neonatal mortality
>45	3094	64	20.7	reference			reference
33-44	1002	26	25.9	1.31	0.82	2.09	1.35	0.83	2.20
21-32	860	23	26.7	1.32	0.82	2.16	1.38	0.83	2.32
<21	464	19	40.9	2.10	1.24	3.55	2.28	1.28	4.05
Early neonatal mortality
>45	3094	45	14.5	reference			reference
33-44	1002	22	22.0	1.66	0.98	2.81	1.68	0.65	1.84
21-32	860	18	20.9	1.51	0.87	2.65	1.54	0.55	2.23
<21	464	16	34.5	2.63	1.46	4.74	2.59	0.53	2.73

*The crude analyses were adjusted for clustering.
^†The OR’s were adjusted for maternal age, parity, previous birth outcome, maternal religion, education and household assets, tea garden residence and clustering.

ISSN: 1471-2393