Table 4

Sensitivity analyses including missing data (n=23 566): the association of baseline cod liver oil intake with cumulative incidence of asthma over 11-year follow-up period, the HUNT Study, 1995–1997 to 2006–2008

Cod liver oil daily intake ≥1 month past yearNo.Cases%Crude OR (95% CI)Adjusted OR (95% CI) Model I*
Missing regarded as intake ‘no’
No204906923.41.00 (reference)1.00 (reference)
Yes30761354.41.31 (1.09 to 1.59)1.38 (1.13 to 1.68)
Missing regarded as intake ‘yes’
No144524232.91.00 (reference)1.00 (reference)
Yes91144044.41.54 (1.34 to 1.77)1.68 (1.43 to 1.96)
  • *Model I adjusted for age, sex, daily smoking, physical activity, education, social benefit, economic difficulties, family history of asthma and body mass index.

  • HUNT, Nord-Trøndelag Health Study.