Table 2 Mode of delivery in 872 women at term in whom labour started spontaneouslyANOVA analyses for influence of maternal thyroid function at every trimester on mode of delivery (df = 3)
Spontaneous delivery | Failure to progress in 1st stage of labour (prolonged dilatation) | Failure to progress in 2nd stage of labour (prolonged expulsion) | Fetal distress | P | |
|---|---|---|---|---|---|
N = 699 (80.2 %) | N = 51 (5.8 %) | N = 69 (7.9 %) | N = 53 (6.1 %) | ||
12 weeks gestation | |||||
TSH(mIU/L) mean(SD) | 1.20 (0.80) | 1.21 (0.63) | 2.01 (0.92) | 1.21 (0.79) | 0.010 |
FT4(pmol/L) mean(SD) | 16.2 (2.75) | 16.4 (1.98) | 15.5 (2.60) | 16.6 (2.23) | 0.070 |
24 weeks gestation | |||||
TSH(mIU/L) mean(SD) | 1.31 (0.65) | 1.38 (0.68) | 1.53 (0.85) | 1.35 (0.65) | 0.093 |
FT4(pmol/L) mean(SD) | 13.9 (2.0) | 13.6 (1.6) | 13.5 (1.7) | 14.2 (2.0) | 0.16 |
36 weeks gestation | |||||
TSH(mIU/L) mean(SD) | 1.46 (0.73) | 1.48 (0.74) | 1.71 (0.96) | 1.57 (0.68) | 0.066 |
FT4(pmol/L) mean(SD) | 13.4 (1.9) | 13.4 (2.2) | 12.7 (1.9) | 13.3 (2.1) | 0.080 |