Are preterm birth and intra-uterine growth restriction more common in Western Australian children of immigrant backgrounds? A population based data linkage study

Table 6 Risk of critically low and fairly low Apgar scores compared to normal Apgar score by maternal country of birth: 1980–1996 (n = 396,636)

Apgar 5mins	ANI (n = 261,380)			AI (n = 21,125)			FB-LIC (n = 1293)			FB-LMIC (n = 14,185)			FB-UMIC (n = 12,753)			FB-HIC (n = 85,900)
Apgar 5mins	n	cRRR, (95%CI)	aRRR^a (95%CI)	n	cRRR, (95%CI)	aRRR^a (95%CI)	n	cRRR, (95%CI)	aRRR^a (95%CI)	n	cRRR, (95%CI)	aRRR^a (95%CI)	n	cRRR, (95%CI)	aRRR^a (95%CI)	n	cRRR, (95%CI)	aRRR^a (95%CI)
Critically low	2517	Ref	Ref	447	2.25 (2.04, 2.49)	2.03 (1.82, 2.28)	17	1.37 (0.85, 2.21)	1.39 (0.86, 2.25)	134	0.98 (0.83, 1.17)	0.95 (0.80, 1.14)	121	0.98 (0.82, 1.18)	0.98 (0/81, 1.17)	828	1.00 (0.93, 1.08)	1.00 (0.92, 1.08)
Fairly low	3619	Ref	Ref	566	1.98 (1.81, 2.17)	1.67 (1.51, 1.84)	14	0.78 (0.46, 1.33)	0.85 (0.50, 1/45)	221	1.13 (0.98, 1.29)	1.16 (1.01, 1.33)	168	0.95 (0.81, 1.11)	1.01 (0.86, 1.18)	1219	1.03 (0.96, 1.10)	1.06 (1.00, 1.14)
Normal	255,244			20,112			1262			13,830			12,464			83,853

ANI Australian-born mothers of non-Indigenous backgrounds, AI Australian-born mothers of Indigenous background, FB-LIC foreign-born mothers from low-income countries, FB-LMIC foreign-born mothers from lower-middle-income countries, FB-UMIC foreign-born mothers of upper-middle-income countries, FB-HIC foreign-born mothers from high-income countries, cRRR crude relative risk ratio, aRRR adjusted relative risk ratio, CI confidence interval, Ref reference group
^a Adjusted for parity, birth year, SEIFA score, maternal age, and sex

ISSN: 1471-2393