Table 1 Frequencies and univariate logistic regression analyses describing associations between predictors and pregnancy planning for women and men separately
From: Clustering of characteristics associated with unplanned pregnancies: the generation R study
|  | Women (N = 7702) | Men (N = 5367) | ||||
|---|---|---|---|---|---|---|
Planned (N = 5442) | Unplanned (N = 2260) | OR (95% CI) for Unplanned pregnancy | Planned (N = 4087) | Unplanned (N = 1280) | OR (95% CI) for Unplanned pregnancy | |
Demographic information | ||||||
 Age | ||||||
   < 20 years | 105 (2.0%) | 250 (11.3%) | 9.15 (7.16–11.69) | 13 (0.4%) | 46 (4.4%) | 13.04 (7.10–23.97) |
  20–25 years | 705 (13.1%) | 582 (26.2%) | 3.20 (2.78–3.70) | 168 (4.6%) | 181 (17.3%) | 4.98 (3.93–6.33) |
  25–30 years | 1555 (29.0%) | 550 (24.8%) | 1.38 (1.21–1.58) | 797 (21.8%) | 275 (26.3%) | 1.81 (1.50–2.18) |
  30–35 years | 2211 (41.2%) | 569 (25.6%) | 1.00 | 1562 (42.6%) | 282 (26.9%) | 1.00 |
   > 35 years | 794 (14.8%) | 269 (12.1%) | 1.31 (1.11–1.54) | 1123 (30.7%) | 263 (25.1%) | 1.26 (1.04–1.51) |
  N missing | 72 | 40 | NA | 424 | 233 | NA |
 Migration background | ||||||
  Dutch | 3094 (57.4%) | 735 (33.0%) | 1.00 | 2611 (67.5%) | 507 (44.9%) | 1.00 |
  Indonesian | 170 (3.2%) | 65 (2.9%) | 1.60 (1.19–2.16) | 129 (3.3%) | 45 (4.0%) | 1.80 (1.27–2.57) |
  Cape Verdian | 122 (2.3%) | 181 (8.1%) | 6.16 (4.83–7.86) | 72 (1.9%) | 57 (5.0%) | 4.43 (3.14–6.26) |
  Moroccan | 342 (6.3%) | 145 (6.5%) | 1.78 (1.45–2.20) | 154 (4.0%) | 57 (5.0%) | 1.88 (1.38–2.56) |
  Dutch Antilles | 96 (1.8%) | 170 (7.6%) | 7.36 (5.67–9.57) | 72 (1.9%) | 71 (6.3%) | 5.03 (3.61–7.00) |
  Surinamese | 343 (6.4%) | 335 (15.0%) | 4.09 (3.45–4.85) | 212 (5.5%) | 134 (11.9%) | 3.24 (2.57–4.08) |
  Turkish | 440 (8.2%) | 228 (10.2%) | 2.17 (1.81–2.59) | 230 (5.9%) | 103 (9.1%) | 2.43 (1.92–3.07) |
  European | 470 (8.7%) | 149 (6.7%) | 1.33 (1.09–1.62) | 233 (6.0%) | 69 (6.1%) | 1.55 (1.17–2.05) |
  Asian | 154 (2.9%) | 76 (3.4%) | 2.08 (1.56–2.77) | 77 (2.0%) | 40 (3.5%) | 2.59 (1.76–3.83) |
  Other | 163 (3.0%) | 143 (6.4%) | 3.66 (2.89–4.65) | 78 (2.0%) | 47 (4.2%) | 3.14 (2.17–4.55) |
  N missing | 48 | 33 | NA | 219 | 150 | NA |
 Educational level | ||||||
  Low | 1159 (22.0%) | 841 (39.3%) | 4.49 (3.81–5.30) | 709 (20.3%) | 331 (34.0%) | 3.34 (2.75–4.07) |
  Mid-low | 1546 (29.4%) | 781 (36.5%) | 3.13 (2.66–3.69) | 894 (25.6%) | 326 (33.5%) | 2.50 (2.05–3.04) |
  Mid-high | 1125 (21.4%) | 293 (13.7%) | 1.63 (1.35–1.97) | 706 (20.2%) | 146 (15.0%) | 1.46 (1.15–1.85) |
  High | 1436 (27.3%) | 227 (10.6%) | 1.00 | 1189 (34.0%) | 171 (17.6%) | 1.00 |
  N missing | 176 | 118 | NA | 589 | 306 | NA |
 Paid job; no | 1004 (21.0%) | 662 (44.2%) | 3.02 (2.70–3.38) | 219 (6.6%) | 130 (14.5%) | 2.46 (1.99–3.05) |
  N missing | 1131 | 763 | NA | 778 | 386 | NA |
 Household income | ||||||
  < €1200/month | 513 (12.5%) | 590 (40.4%) | 6.05 (5.30–6.91) |  |  |  |
  €1200–€2000/month | 703 (17.1%) | 355 (24.3%) | 2.73 (2.35–3.19) |  |  |  |
  > €2000/month | 2892 (70.4%) | 516 (35.3%) | 1.00 |  |  |  |
  N missing | 1334 | 799 | NA |  |  |  |
 Financial difficulties | ||||||
  No | 3457 (84.2%) | 914 (63.2%) | 1.00 |  |  |  |
  Some | 547 (13.3%) | 416 (28.7%) | 2.75 (2.40–3.16) |  |  |  |
  Great | 100 (2.4%) | 117 (8.1%) | 4.16 (3.28–5.28) |  |  |  |
  N missing | 1338 | 813 | NA |  |  |  |
 Religion | ||||||
  Not religious | 2869 (63.7%) | 891 (56.2%) | 1.00 |  |  |  |
  Christian | 843 (18.7%) | 333 (21.0%) | 1.29 (1.13–1.48) |  |  |  |
  Hindustan | 90 (2.0%) | 45 (2.8%) | 1.51 (1.07–2.11) |  |  |  |
  Islamic | 596 (13.2%) | 262 (16.5%) | 1.36 (1.19–1.57) |  |  |  |
  Other religion | 104 (2.3%) | 55 (3.5%) | 1.73 (1.24–2.41) |  |  |  |
  N missing | 940 | 674 | NA |  |  |  |
 Marital status | ||||||
  Married | 2927 (54.9%) | 723 (33.1%) | 1.00 |  |  |  |
  Cohabiting | 2058 (38.6%) | 711 (32.5%) | 1.41 (1.25–1.59) |  |  |  |
  Single | 350 (6.6%) | 753 (34.4%) | 8.61 (7.42–10.01) |  |  |  |
  N missing | 107 | 73 | NA |  |  |  |
 Parity | ||||||
  0 | 3255 (61.3%) | 1310 (60.1%) | 1.21 (1.07–1.36) |  |  |  |
  1 | 1543 (29.0%) | 502 (23.0%) | 1.00 |  |  |  |
  2 | 413 (7.8%) | 274 (12.6%) | 2.06 (1.71–2.47) |  |  |  |
   ≥ 3 | 102 (1.9%) | 92 (4.2%) | 2.98 (2.22–3.99) |  |  |  |
  N missing | 129 | 82 | NA |  |  |  |
Mental health | ||||||
 Childhood trauma; score (SD) | −0.10 (0.90) | 0.28 (1.19) | 1.38 (1.31–1.47) |  |  |  |
  N missing | 1383 | 781 | NA |  |  |  |
 Perceived parental rearing | ||||||
  Emotional warmth; score (SD) | 0.03 (1.00) | −0.08 (1.00) | 0.84 (0.74–0.97) |  |  |  |
  N missing | 2734 | 1277 | NA |  |  |  |
  Overprotection; score (SD) | −0.04 (0.98) | 0.13 (1.05) | 1.19 (1.11–1.26) |  |  |  |
  N missing | 1489 | 849 | NA |  |  |  |
  Rejection; score (SD) | −0.08 (0.91) | 0.22 (1.20) | 1.26 (1.19–1.34) |  |  |  |
  N missing | 1525 | 884 | NA |  |  |  |
 History of depression; yes | 1059 (25.7%) | 564 (36.5%) | 1.73 (1.45–2.07) | 524 (15.5%) | 178 (19.0%) | 1.40 (1.12–1.75) |
  N missing | 1316 | 714 | NA | 702 | 341 | NA |
 History of anxiety; yes | 598 (14.4%) | 308 (19.6%) | 1.53 (1.27–1.84) | 275 (8.1%) | 93 (9.8%) | 1.34 (1.02–1.77) |
  N missing | 1284 | 686 | NA | 692 | 333 | NA |
 History of eating disorder; yes | 364 (8.9%) | 175 (11.5%) | 1.42 (1.14–1.76) |  |  |  |
  N missing | 1347 | 742 | NA |  |  |  |
 Self-esteem; score (SD) | 0.08 (0.94) | −0.24 (1.12) | 0.73 (0.68–0.77) | −0.08 (0.91) | 0.30 (1.22) |  |
  N missing | 1526 | 877 | NA | 667 | 325 |  |
 Cognition (IQ) | ||||||
   < 70 | 151 (4.0%) | 95 (7.1%) | 2.16 (1.69–2.76) |  |  |  |
  70–85 | 659 (17.4%) | 381 (28.6%) | 1.91 (1.68–2.17) |  |  |  |
   ≥ 85 | 2974 (78.6%) | 858 (64.3%) | 1.00 |  |  |  |
  N missing | 1658 | 926 | NA |  |  |  |
Physical health | ||||||
 Chronic somatic disease; yes | 397 (7.6%) | 155 (7.1%) | 0.94 (0.77–1.14) | 269 (7.7%) | 76 (7.8%) | 1.09 (0.83–1.42) |
  N missing | 188 | 79 | NA | 615 | 303 | NA |
 BMI prior to pregnancy | ||||||
   < 20 | 684 (14.7%) | 381 (19.5%) | 1.39 (1.20–1.61) | 151 (3.7%) | 66 (5.2%) | 1.55 (1.14–2.10) |
  20–25 | 2672 (57.5%) | 1011 (51.7%) | 1.00 | 1896 (46.5%) | 607 (47.9%) | 1.14 (0.99–1.30) |
  25–30 | 907 (19.5%) | 354 (18.1%) | 1.04 (0.90–1.20) | 1687 (41.4%) | 477 (37.7%) | 1.00 |
   ≥ 30 | 383 (8.2%) | 208 (10.6%) | 1.41 (1.17–1.70) | 343 (8.4%) | 116 (9.2%) | 1.20 (0.95–1.51) |
  N missing | 796 | 306 | NA | 10 | 14 | NA |
Social factors | ||||||
 Relational difficulties; score (SD) | −0.15 (0.87) | 0.39 (1.21) | 1.62 (1.53–1.71) | −0.08 (0.91) | 0.30 (1.22) | 1.41 (1.32–1.50) |
  N missing | 892 | 572 | NA | 667 | 325 | NA |
 History of delinquency | ||||||
  No crimes | 2554 (61.1%) | 796 (50.7%) | 1.00 | 1266 (40.6%) | 309 (35.4%) | 1.00 |
  Petty crimes | 702 (16.8%) | 321 (20.4%) | 1.36 (1.17–1.58) | 355 (11.4%) | 98 (11.2%) | 1.10 (0.86–1.42) |
  More serious crimes | 927 (22.2%) | 454 (28.9%) | 1.50 (1.31–1.70) | 1497 (48.0%) | 467 (53.4%) | 1.28 (1.10–1.50) |
  N missing | 1259 | 689 | NA | 969 | 406 | NA |
  ≤ 1 close friend; yes | 151 (5.0%) | 107 (8.6%) | 1.90 (1.48–2.44) |  |  |  |
  N missing | 2401 | 1018 | NA |  |  |  |
Substance use | ||||||
 Alcohol intake prior to pregnancy | ||||||
   < 1 glass/week | 2950 (62.6%) | 1078 (53.5%) | 1.00 | 662 (20.9%) | 252 (28.4%) | 1.00 |
  1–6 glasses/week | 613 (13.0%) | 277 (13.7%) | 0.77 (0.68–0.87) | 1702 (53.8%) | 415 (46.7%) | 0.68 (0.57–0.80) |
   ≥ 1 glass/day | 1148 (24.4%) | 661 (32.8%) | 0.76 (0.62–0.94) | 798 (25.2%) | 221 (24.9%) | 0.70 (0.58–0.85) |
  N missing | 2157 | 1025 | NA | 925 | 392 | NA |
 Smoking prior to pregnancy | ||||||
  No | 2950 (62.6%) | 1078 (53.5%) | 1.00 | 2274 (58.3%) | 577 (47.5%) | 1.00 |
   < 5 cigarettes/day | 613 (13.0%) | 277 (13.7%) | 1.21 (1.03–1.41) | 614 (15.8%) | 191 (15.7%) | 1.23 (1.02–1.48) |
   ≥ 5 cigarettes/day | 1148 (24.4%) | 661 (32.8%) | 1.53 (1.36–1.72) | 1010 (25.9%) | 447 (36.8%) | 1.74 (1.51–2.01) |
  N missing | 731 | 244 | NA | 189 | 65 | NA |
 Drug use prior to pregnancy; yes | 297 (5.7%) | 278 (12.8%) | 2.42 (2.04–2.87) | 347 (8.9%) | 232 (19.2%) | 2.40 (2.00–2.87) |
  N missing | 211 | 88 | NA | 170 | 70 | NA |
Sexual behavior | ||||||
  > 1 sexual partner in the year prior to pregnancy; yes | 265 (5.5%) | 276 (14.0%) | 2.62 (2.16–3.17) | 173 (4.5%) | 156 (13.9%) | 3.38 (2.70–4.24) |
  N missing | 656 | 285 | NA | 256 | 157 | NA |
 History of treatment for STD; yes | 485 (10.2%) | 303 (15.4%) | 1.63 (1.38–1.92) | 235 (6.2%) | 108 (9.5%) | 1.63 (1.28–2.07) |
  N missing | 674 | 297 | NA | 318 | 147 | NA |
 Age of first sexual contact | ||||||
   < 16 years | 575 (12.7%) | 395 (21.7%) | 2.23 (1.86–2.67) |  |  |  |
  16–20 years | 3066 (67.7%) | 1156 (63.4%) | 1.24 (1.07–1.44) |  |  |  |
   ≥ 21 years | 885 (19.6%) | 271 (14.9%) | 1.00 |  |  |  |
  N missing | 916 | 438 | NA |  |  |  |
 History of abortion; yes | 565 (19.8%) | 464 (35.7%) | 2.21 (1.91–2.56) |  |  |  |
  N missing | 2589 | 962 | NA |  |  |  |