Table 1

Baseline characteristics of invited individuals by participation

SexAge at invitation date (years)InvitedParticipants*Non-participants*P value
N(%)‡n(%)n(%)
AllAll ages8009(100.0)5938(74.1)2071(25.9)
≤653950(49.3)2877(72.8)1073(27.2)0.008
>654059(50.7)3061(75.4)998(24.6)
MenAll ages5228(65.3)3892(74.4)1336(25.6)
≤652634(32.9)1901(72.2)733(27.8)<0.001
>652594(32.4)1991(76.8)603(23.2)
WomenAll ages2781(34.7)2046(73.6)735(26.4)
≤651316(16.4)976(74.2)340(25.8)0.501
>651465(18.3)1070(73.0)395(27.0)
  • *Participants were individuals who gave consent, returned an analysable FIT at year 1 and did not subsequently withdraw from the study.

  • †P values are for the comparison of age at invitation date for participants and non-participants, overall and by sex.

  • ‡Percentage of the total invited cohort (8009).