Table 3

 Association between tertiles of fruit, vegetables, and fruit plus vegetable intake, and IP. Lowest and middle tertiles of intake are compared with the highest tertile

Cases No (%)Controls No (%)Crude OR (95% CI)Adjusted OR*p Value for trend (95% CI)
n, number; OR, odds ratio; CI, confidence interval.
*Adjusted for obesity, smoking (pack-years), total energy intake.
Fruit (g/day)
    1, ⩽7833 (45)40 (27)1.8 (0.9 to 3.6)1.6 (0.8 to 3.3)0.3
    2, >78–17616 (22)57 (39)0.6 (0.3 to 1.3)0.6 (0.3 to 1.3)
    3, >176 (referent)24 (33)49 (34)1.01.0
Vegetables (g/day)
    1, <64.625 (34)48 (33)1.2 (0.6 to 2.5)1.3 (0.6 to 2.7)0.5
    2, 64.6–113.026 (36)47 (32)1.3 (0.6 to 2.6)1.2 (0.6 to 2.5)
    3, >113.0 (referent)22 (30)51 (35)1.01.0
Fruit plus vegetables (g/day)
    1, <16733 (45)40 (27)2.0 (1.0 to 4.1)1.9 (1.0,4.0)0.08
    2, 167–27518 (25)55 (38)0.8 (0.4 to 1.6)0.8 (0.4 to 1.7)
    3, >275 (referent)22 (30)51 (35)1.01.0