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

CharacteristicsMean grades (SD)Coeliac disease (n=1767)Non-coeliac disease (n=443 902)Total number
Sex
 Male198 (62.5)651226 963227 614
 Female220 (64.8)1116216 939218 055
Apgar score at 5 min
 7–10209 (64.5)1733431 895433 628
 <7206 (64.8)1232903302
Small for gestational age
 No209 (64.6)1659431 895418 598
 Yes198 (67.1)38329010 096
Age at diagnosis (years)
 0–5 208 (63.3)6710671
 6–12 211 (66.5)8060806
 13–15 220 (62.1)2900290
Year of birth
 1991207 (64.6)402115 529115 931
 1992209 (64.7)451114 225114 676
 1993209 (64.8)598109 377109 975
 1994210 (64.3)316104 771105 087
Type of family
 Married/cohabiting216 (60.1)1268312 771314 039
 Single190 (70.7)498130 856131 354
Parental education
 Compulsory163 (71.5)3515 22515 260
 Upper secondary191 (63.1)848209 505210 353
 <2 years university219 (58.9)14333 73533 878
 ≥2 years university231 (58.5)741185 437186 178
Mother’s income
 Low198 (66.4)503136 877137 380
 Middle206 (62.2)607149 267149 874
 High223 (62.1)634150 327150 961
Father’s income
 Low192 (68.6)429131 453131 882
 Middle206 (60.1)653146 966147 619
 High229 (57.9)622149 310149 932