Comparison of Generation 1 participants (mothers) and non-participants (mothers) (year 8, year 26) by several characteristics of the mothers at the time of recruitment
| Follow-up | Year 8 | Year 10 | Year 14 | Year 17 | Year 26 | ||||||||||
| Participant | P value | Participant | P value | Participant | P value | Participant | P value | Participant | P value | ||||||
| No | Yes | No | Yes | No | Yes | No | Yes | No | Yes | ||||||
| n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | ||||||
| Total | 691 (25.3) | 2039 (74.7) | 782 (28.6) | 1948 (71.4) | 963 (35.3) | 1767 (64.7) | 1115 (40.8) | 1615 (59.2) | 2094 (76.7) | 636 (23.3) | |||||
| Age (years) | <0.001 | <0.001 | <0.001 | <0.001 | <0.001 | ||||||||||
| <20 | 117 (16.9) | 156 (7.7) | 141 (18.0) | 132 (6.8) | 149 (15.5) | 124 (7.0) | 166 (14.9) | 107 (6.6) | 250 (11.9) | 23 (3.6) | |||||
| 20–25 | 200 (28.9) | 382 (18.7) | 218 (27.9) | 364 (18.7) | 251 (26.1) | 331 (18.7) | 280 (25.1) | 302 (18.7) | 491 (23.4) | 91 (14.3) | |||||
| 25–30 | 196 (28.4) | 628 (30.8) | 226 (28.9) | 598 (30.7) | 283 (29.4) | 541 (30.6) | 337 (30.2) | 487 (30.2) | 652 (31.1) | 172 (27.0) | |||||
| 30–35 | 123 (17.8) | 568 (27.9) | 137 (17.5) | 554 (28.4) | 205 (21.3) | 486 (27.5) | 232 (20.8) | 459 (28.4) | 461 (22.0) | 230 (36.2) | |||||
| ≥35 | 55 (8.0) | 305 (15.0) | 60 (7.7) | 300 (15.4) | 75 (7.8) | 285 (16.1) | 100 (9.0) | 260 (16.1) | 240 (11.5) | 120 (18.9) | |||||
| Education | <0.001 | <0.001 | <0.001 | <0.001 | <0.001 | ||||||||||
| ≤Year 9 | 90 (13.0) | 121 (5.9) | 97 (12.4) | 114 (5.9) | 106 (11.0) | 105 (5.9) | 124 (11.1) | 87 (5.4) | 189 (9.0) | 22 (3.5) | |||||
| Year 10 | 206 (29.8) | 452 (22.2) | 250 (32.0) | 408 (20.9) | 289 (30.0) | 369 (20.9) | 337 (30.2) | 321 (19.9) | 565 (27.0) | 93 (14.6) | |||||
| Year 11–12 | 157 (22.7) | 488 (23.9) | 167 (21.4) | 478 (24.5) | 232 (24.1) | 413 (23.4) | 259 (23.2) | 386 (23.9) | 491 (23.4) | 154 (24.2) | |||||
| TAFE*/Trade | 177 (25.6) | 713 (35.0) | 195 (24.9) | 695 (35.7) | 248 (25.8) | 642 (36.3) | 294 (26.4) | 596 (36.9) | 644 (30.8) | 246 (38.7) | |||||
| Tertiary | 38 (5.5) | 228 (11.2) | 51 (6.5) | 215 (11.0) | 66 (6.9) | 200 (11.3) | 74 (6.6) | 192 (11.9) | 161 (7.7) | 105 (16.5) | |||||
| Missing | 23 (3.3) | 37 (1.8) | 22 (2.8) | 38 (2.0) | 22 (2.3) | 38 (2.2) | 27 (2.4) | 33 (2.0) | 44 (2.1) | 16 (2.5) | |||||
| Ethnicity | <0.001 | <0.001 | <0.001 | <0.001 | 0.002 | ||||||||||
| Caucasian | 576 (83.4) | 1829 (89.7) | 643 (82.2) | 1762 (90.5) | 803 (83.4) | 1602 (90.7) | 941 (84.4) | 1464 (90.7) | 1823 (87.1) | 582 (91.5) | |||||
| ATSI† | 39 (5.6) | 26 (1.3) | 47 (6.0) | 18 (0.9) | 51 (5.3) | 14 (0.8) | 53 (4.8) | 12 (0.7) | 60 (2.9) | 5 (0.8) | |||||
| Other | 76 (11.0) | 184 (9.0) | 92 (11.8) | 168 (8.6) | 109 (11.3) | 151 (8.5) | 121 (10.9) | 139 (8.6) | 211 (10.1) | 49 (7.7) | |||||
| Income* | <0.001 | <0.001 | <0.001 | <0.001 | <0.001 | ||||||||||
| Low | 170 (24.6) | 291 (14.3) | 197 (25.2) | 264 (13.6) | 237 (24.6) | 224 (12.7) | 249 (22.3) | 212 (13.1) | 397 (19.0) | 64 (10.1) | |||||
| Medium | 317 (45.9) | 937 (46.0) | 358 (45.8) | 896 (46.0) | 437 (45.4) | 817 (46.2) | 523 (46.9) | 731 (45.3) | 980 (46.8) | 274 (43.1) | |||||
| High | 115 (16.6) | 678 (33.3) | 128 (16.4) | 665 (34.1) | 183 (19.0) | 610 (34.5) | 221 (19.8) | 572 (35.4) | 527 (25.2) | 266 (41.8) | |||||
| Missing | 89 (12.9) | 133 (6.5) | 99 (12.7) | 123 (6.3) | 106 (11.0) | 116 (6.6) | 122 (10.9) | 100 (6.2) | 190 (9.1) | 32 (5.0) | |||||
| IRSAD tertile† | <0.001 | <0.001 | <0.001 | <0.001 | |||||||||||
| Low | 169 (24.5) | 437 (21.4) | 183 (23.4) | 423 (21.7) | 220 (22.8) | 386 (21.8) | 268 (24.0) | 338 (20.9) | 488 (23.2) | 118 (18.6) | |||||
| Medium | 117 (16.9) | 502 (24.6) | 138 (17.6) | 481 (24.7) | 169 (17.5) | 450 (25.5) | 205 (18.4) | 414 (25.6) | 460 (22.0) | 159 (25.0) | |||||
| High | 84 (12.2) | 533 (26.1) | 108 (13.8) | 509 (26.1) | 142 (14.7) | 475 (26.9) | 171 (15.3) | 446 (27.6) | 407 (19.4) | 210 (33.0) | |||||
| Missing | 321 (46.5) | 567 (27.8) | 353 (45.1) | 535 (27.5) | 432 (44.9) | 456 (25.8) | 471 (42.2) | 417 (25.8) | 739 (35.3) | 149 (23.4) | |||||
*Family income.
§†Area-level socioeconomic status based on IRSAD. Low levels=most disadvantaged, high levels=most advantaged.
ATSI, Aboriginal or Torres Strait Islander; IRSAD, Index of Relative Socio-economic Advantage and Disadvantage; TAFE, technical and further education.