Table 3.

Infant birth outcomes by place of delivery

Infant birth outcome	Place of Delivery
	Institution	Non-Institution		Birthplace Unknown
	No. (%) [N] or Mean (SD) [N]	No. (%) [N] or Mean (SD) [N]	RR (95% CI) p or Mean diff. (95% CI) p	No. (%) [N] or Mean (SD) [N]
Female	1961 (49.3%) [3979]	262 (49.8%) [526]	1.02 (0.93, 1.11); 0.733	164 (48.5%) [338]
Birth weight (kg)	3.1 (0.5) [3824]	2.9 (0.6) [316]	−0.17(−0.23, −0.11); < 0.001	3.0 (0.5) [161]
Low birthweight
< 2.5 Kg	344 (9.0%) [3824]	47 (14.9%) [316]	1.65 (1.24, 2.19); < 0.001	3 (1.9%) [161]
< 2.0 Kg	94 (2.5%) [3824]	24 (7.6%) [316]	3.09(2.00; 4.77)0.000	3 (1.9%) [161]
< 1.5 Kg	25 (0.7%) [3824]	7 (2.2%) [316]	3.39(1.48;7.77)0.004	3 (1.9%) [161]
Gestational age at delivery (weeks)
Estimate 1	38.9 (2.4) [3288]	37.7 (3.0) [253]	−1.15 (−1.46, −0.84); < 0.001	38.4 (2.8) [126]
Estimate 2	38.8 (2.6) [3440]	37.3 (4.4) [462]	−1.54 (−1.81, −1.26); < 0.001	38.2 (4.4) [295]
Preterm (< 37 wk)
Estimate 1	555 (16.9%) [3288]	82 (32.4%) [253]	1.92 (1.58, 2.33); < 0.001	29 (23.0%) [126]
Estimate 2	592 (17.2%) [3441]	175 (37.9%) [462]	2.20 (1.92, 2.53); < 0.001	85 (28.1%) [303]
Small-for-gestational age (<10th centile)	524 (15.9%) [3288]	44 (17.4%) [253]	1.09 (0.82, 1.44); 0.541	23 (18.3%) [126]
Preterm AND Small-for-gestational age	33(1.0%) [3288]	8(3.2%) [253]	3.15 (1.47, 6.75); 0.003	2(1.6%) [126]
Stillbirth	50 (1.2%) [4029]	16 (3.0%) [542]	2.38 (1.36, 4.15); 0.002	47 (12.2%) [385]
Neonatal Death	94 (2.4%) [3979]	25 (4.8%) [526]	2.01 (1.31, 3.10); 0.001	33 (9.76%) [338]

Estimate 1 – does not include those with missing birthweight

Estimate 2 – includes those with missing birthweight