Table 4.

Logistic regression of neonatal mortality in Sápmi, 1800–1899, presented as odds ratios with 95% confidence intervals

Model	I	II	III
	Sami
Season of birth (Ref. Summer)
Winter	1.41 (1.16–1.72)	1.41 (1.16–1.71)	1.41 (1.16–1.71)
Spring	1.21 (0.99–1.48)	1.20 (0.99–1.48)	1.20 (0.99–1.47)
Autumn	1.24 (1.01–1.53)	1.24 (1.01–1.52)	1.24 (1.01–1.53)
Gender (Ref. Male)
Female		0.76 (0.66–0.86)	0.76 (0.66–0.86)
Parity (Ref. 1)
2 or 3			0.66 (0.54–0.79)
≥4			1.00 (0.85–1.18)
Model Likelihood ratio test	12.44	29.69	59.70
	Non-Sami
Season of birth (Ref. Summer)
Winter	1.16 (0.92–1.45)	1.15 (0.92–1.45)	1.15 (0.92–1.45)
Spring	1.13 (0.90–1.43)	1.13 (0.90–1.43)	1.14 (0.90–1.44)
Autumn	1.05 (0.82–1.34)	1.05 (0.82–1.34)	1.05 (0.82–1.34)
Gender (Ref. Male)
Female		0.86 (0.74–1.02)	0.87 (0.74–1.02)
Parity (Ref. 1)
2 or 3			0.65 (0.52–0.80)
≥4			0.82 (0.68–0.99)
Model Likelihood ratio test	1.95	4.87	20.23

Note: Significant results (p < 0.05) in bold.