Table 6.

Agreement between questionnaire and calendar measurements of time in the sun in summer during weekends and holidays at T1

Age span (y)Cases (n = 136)
Controls (n = 268)
a/N*κw (95% CI)a/N*κw (95% CI)
Time in the sun in summer (five levels: <1 hour daily to >4 hours daily)
    6-1090/1360.71(0.55-0.88)181/2680.58(0.47-0.70)
    11-1581/1360.65(0.48-0.82)169/2720.61(0.49-0.72)
    16-2055/1360.57(0.40-0.74)127/2710.58(0.46-0.70)
    Last 349/1360.55(0.40-0.70)104/2700.54(0.43-0.65)
  • * Number of subjects with exact agreement on both reports/total umber of subjects.

  • Weighted κ statistic (95% CI).