From: Maternal urinary manganese and risk of low birth weight: a case–control study
Manganese levelsa | Male (n = 404) | Female (n = 412) | P for heterogeneity | ||||
---|---|---|---|---|---|---|---|
Ca/Co | ORb (95 % CI) | ORc (95 % CI) | Ca/Co | ORb (95 % CI) | ORc (95 % CI) | ||
Tertile 1 | 22/101 | 0.73 (0.38, 1.40) | 0.64 (0.22, 1.83) | 32/103 | 1.55 (0.81, 2.98) | 2.12 (0.86, 5.25) | 0.24 |
Tertile 2 | 29/101 | 1.00 | 1.00 | 20/103 | 1.00 | 1.00 | |
Tertile 3 | 50/101 | 1.77 (1.02, 3.06) | 1.88 (0.85, 4.79) | 51/103 | 2.65 (1.46, 4.80) | 1.94 (0.88, 4.45) |