Table 1 Demographic characteristics of term and very preterm (VPT) groups
TermVPT
Sex F/M18/2641/53*
Social class
    I5
    II1931
    III1147
    IV57
    V41**
Age (y) at adolescent assessment, mean (SD)15.0 (0.8)15.5 (0.6)***
Age (y) at adult assessment, mean (SD)19.0 (0.9)19.7 (1.1)****

  • *χ2 = 0.09; df = 1; p = 0.854. **χ2 = 11.44; df = 4; p = 0.022. ***t = −3.77; df = 135; p<0.001. ****t = −3.62; df = 132; p<0.001.