Table 1.
The study population with mean scores at ninth grade completion (with SDs) given for each child and parental characteristics, for coeliac disease and non-coeliac disease children
| Characteristics | Mean grades (SD) | Coeliac disease (n=1767) | Non-coeliac disease (n=443 902) | Total number |
| Sex | ||||
| Male | 198 (62.5) | 651 | 226 963 | 227 614 |
| Female | 220 (64.8) | 1116 | 216 939 | 218 055 |
| Apgar score at 5 min | ||||
| 7–10 | 209 (64.5) | 1733 | 431 895 | 433 628 |
| <7 | 206 (64.8) | 12 | 3290 | 3302 |
| Small for gestational age | ||||
| No | 209 (64.6) | 1659 | 431 895 | 418 598 |
| Yes | 198 (67.1) | 38 | 3290 | 10 096 |
| Age at diagnosis (years) | ||||
| 0–5 | 208 (63.3) | 671 | 0 | 671 |
| 6–12 | 211 (66.5) | 806 | 0 | 806 |
| 13–15 | 220 (62.1) | 290 | 0 | 290 |
| Year of birth | ||||
| 1991 | 207 (64.6) | 402 | 115 529 | 115 931 |
| 1992 | 209 (64.7) | 451 | 114 225 | 114 676 |
| 1993 | 209 (64.8) | 598 | 109 377 | 109 975 |
| 1994 | 210 (64.3) | 316 | 104 771 | 105 087 |
| Type of family | ||||
| Married/cohabiting | 216 (60.1) | 1268 | 312 771 | 314 039 |
| Single | 190 (70.7) | 498 | 130 856 | 131 354 |
| Parental education | ||||
| Compulsory | 163 (71.5) | 35 | 15 225 | 15 260 |
| Upper secondary | 191 (63.1) | 848 | 209 505 | 210 353 |
| <2 years university | 219 (58.9) | 143 | 33 735 | 33 878 |
| ≥2 years university | 231 (58.5) | 741 | 185 437 | 186 178 |
| Mother’s income | ||||
| Low | 198 (66.4) | 503 | 136 877 | 137 380 |
| Middle | 206 (62.2) | 607 | 149 267 | 149 874 |
| High | 223 (62.1) | 634 | 150 327 | 150 961 |
| Father’s income | ||||
| Low | 192 (68.6) | 429 | 131 453 | 131 882 |
| Middle | 206 (60.1) | 653 | 146 966 | 147 619 |
| High | 229 (57.9) | 622 | 149 310 | 149 932 |