Table 2 Odds ratio (OR) and 95 % confidence interval (CI) for placental abruption in relation to categories of placental mitochondrial DNA copy number
From: Placental mitochondrial DNA content and placental abruption: a pilot study
Placental mitochondrial DNA copy number | Placental abruption cases (N = 103) | Controls (N = 102) | Adjusted ORa (95 %CI) |
|---|---|---|---|
Quartile 1 (<86.5) | 22 (21.4) | 26 (25.5) | 1.00 (reference) |
Quartile 2 (86.5–120.4) | 17 (16.5) | 25 (24.5) | 0.72 (0.22–2.35) |
Quartile 3 (120.5–191.4) | 27 (26.2) | 25 (24.5) | 1.91 (0.66–5.52) |
Quartile 4 (≥191.5) | 37 (35.9) | 26 (25.5) | 2.15 (0.74–6.21) |
P-value for linear trend | 0.05 | ||
<Median (<120.5) | 39 (37.9) | 51 (50.0) | 1.00 (reference) |
≥Median (≥120.5) | 64 (62.1) | 51 (50.0) | 2.38 (1.11–5.08) |