Table 4
Models of dichotomous (cord higher/not higher than maternal)
| β | 95% CI | OR | 95% CI | |
|---|---|---|---|---|
| Positive association increased odds of having cord PbB higher than maternal. | ||||
| All samples (n = 157) | ||||
| Sample analysed in second batch | 1.63 | 0.35 to 2.91 | 5.11 | 1.42 to 18.33 |
| Blood pressure, centred, per 10 mm Hg | 0.40 | −0.19 to 0.99 | ||
| Mean Hb, per g/100 ml | −0.61 | −1.14 to −0.08 | 0.55 | 0.32 to 0.93 |
| Alcohol, 2nd interview, yes/no | 2.04 | 0.88 to 3.19 | 7.67 | 2.41 to 24.38 |
| Caesarean section | −1.25 | −3.04 to 0.55 | 0.29 | 0.05 to 1.73 |
| Previous miscarriage | −0.82 | −2.08 to 0.43 | 0.44 | 0.13 to 1.54 |
| Previous abortion | 0.78 | −0.21 to 1.77 | 2.18 | 0.81 to 5.89 |
| Delivery in winter | 0.79 | −0.10 to 1.69 | 2.21 | 0.91 to 5.40 |
| Mother >30 y | −2.09 | −4.10 to −0.08 | ||
| Blood pressure × mother’s age >30 | 4.02 | 0.75 to 7.29 | ||
| All samples analysed shortly after delivery (n = 138) | ||||
| Blood pressure, centred, per 10 mm Hg | 0.43 | −0.17 to 1.03 | ||
| Mean Hb, per g/100 ml | −0.58 | −1.12 to −0.04 | 0.56 | 0.33 to 0.96 |
| Alcohol, 2nd interview, yes/no | 1.92 | 0.76 to 3.09 | 6.84 | 2.13 to 21.92 |
| Caesarean section | −0.88 | −2.69 to 0.93 | 0.42 | 0.07 to 2.54 |
| Previous miscarriage | −0.84 | −2.19 to 0.52 | 0.43 | 0.11 to 1.68 |
| Previous abortion | 0.62 | −0.43 to 1.67 | 1.85 | 0.65 to 5.29 |
| Delivery in winter | 0.66 | −0.30 to 1.61 | 1.93 | 0.74 to 5.01 |
| Mother >30 y | −1.17 | −3.19 to 0.85 | ||
| Blood pressure × mother’s age >30 | 2.66 | −0.12 to 5.43 | ||
