Table 1 Weighted Distribution of Variables Used in Regression Analysis of Labour Induction Among Nulliparous and Multiparous Women
From: Socioeconomic risk factors for labour induction in the United Kingdom
| Â | Â | Nulliparous | Multiparous | ||
|---|---|---|---|---|---|
% | Number | % | Number | ||
Labour Induction | Not induced | 63.6 | 4754 | 72.8 | 7817 |
Induced | 36.4 | 2721 | 27.2 | 2925 | |
Age | 19 years and under | 18.0 | 1350 | 2.2 | 232 |
20–24 years old | 28.9 | 2163 | 20.1 | 2165 | |
25–29 years old | 28.7 | 2148 | 30.6 | 3291 | |
30–34 years old | 18.4 | 1378 | 31.6 | 3397 | |
35 years and older | 6.0 | 451 | 15.5 | 1663 | |
Ethnicity | White | 86.0 | 6432 | 82.5 | 8855 |
Indian | 2.7 | 199 | 2.5 | 273 | |
Pakistani/Bangladeshi | 5.2 | 386 | 8.1 | 868 | |
Black/Black British | 2.9 | 216 | 4.2 | 449 | |
Other | 3.3 | 243 | 2.7 | 290 | |
Marital Status | Legally Married | 50.7 | 3798 | 64.4 | 6925 |
Cohabiting | 27.9 | 2088 | 20.4 | 2195 | |
Unpartnered | 21.4 | 1604 | 15.2 | 1631 | |
Education | Higher/first degrees | 19.0 | 1422 | 13.4 | 1436 |
Diplomas in higher ed | 9.4 | 703 | 7.6 | 819 | |
A/O Levels (GSCE A-C) | 43.4 | 3244 | 42.4 | 4542 | |
Other (incl. GCSE D-G) | 14.4 | 1073 | 13.2 | 1410 | |
None | 13.8 | 1032 | 23.5 | 2514 | |
Occupation | Managerial/professional | 30.5 | 2283 | 22.9 | 2459 |
Intermediate | 18.8 | 1409 | 15.2 | 1636 | |
Self-employed | 2.6 | 197 | 4.1 | 442 | |
Lower supervisor | 5.2 | 390 | 5.6 | 599 | |
Semi-routine/Routine | 33.0 | 2475 | 39.0 | 4197 | |
None | 9.8 | 736 | 13.2 | 1418 | |
Household Income Quintile | Lowest Quintile | 23.0 | 1719 | 26.6 | 2848 |
Second Quintile | 17.4 | 1296 | 26.1 | 2797 | |
Third Quintile | 18.5 | 1380 | 19.3 | 2064 | |
Fourth Quintile | 19.1 | 1425 | 16.3 | 1744 | |
Highest Quintile | 22.0 | 1645 | 11.8 | 1262 | |
Housing Tenure | Own outright/mortgage | 57.5 | 4295 | 58.0 | 6224 |
Rent from LA/HA | 21.5 | 1610 | 30.6 | 3283 | |
Rent privately | 9.6 | 720 | 7.7 | 821 | |
Other (incl. with parents) | 11.4 | 850 | 3.7 | 399 | |
Country /Electoral Ward Deprivation | England – Advantaged | 25.3 | 1897 | 24.6 | 2644 |
England – Disadvantaged | 24.9 | 1867 | 23.9 | 2571 | |
England – Ethnic | 11.1 | 830 | 14.2 | 1531 | |
Wales – Advantaged | 4.5 | 337 | 4.5 | 482 | |
Wales – Disadvantaged | 10.9 | 813 | 10.1 | 1086 | |
Scotland – Advantaged | 6.5 | 490 | 5.9 | 633 | |
Scotland –Disadvantaged | 7.1 | 532 | 6.0 | 641 | |
N. Ireland – Advantaged | 3.7 | 279 | 4.0 | 432 | |
N. Ireland Disadvantaged | 5.9 | 445 | 6.8 | 731 | |
Smoking Behaviour | Smoked During Pregnancy | 15.8 | 1182 | 16.0 | 1713 |
Did Not Smoke | 84.2 | 6302 | 84.0 | 9030 | |
Pregnancy Complications | No pregnancy comp | 62.1 | 4651 | 62.7 | 6737 |
Complications not associated with induction | 17.7 | 1326 | 19.2 | 2066 | |
Complications associated with induction | 15.5 | 1160 | 13.1 | 1415 | |
Other | 4.7 | 353 | 5.0 | 533 | |
Maternal BMI | Low (<18.5) | 7.5 | 520 | 5.0 | 488 |
Normal (18.5–24.9) | 68.2 | 4737 | 63.1 | 6130 | |
High (≥25.0) | 24.3 | 1690 | 31.9 | 3105 | |
Infant Birth Weight | Low (<2500 g) | 7.5 | 558 | 5.9 | 632 |
Normal (2500-4000gs) | 84.0 | 6287 | 81.7 | 8774 | |
High (>4000 g) | 8.5 | 639 | 12.4 | 1333 | |
Infant Gestational Age | 259 days or less | 10.5 | 788 | 10.6 | 1135 |
260–272 days | 14.0 | 1052 | 18.2 | 1960 | |
273–286 days | 47.7 | 3575 | 50.1 | 5386 | |
287–293 days | 23.4 | 1756 | 17.9 | 1926 | |
294 days or more | 4.3 | 319 | 3.2 | 344 | |