Table 1

Characteristics of the study population

Controls (n = 259)Cases
MSI-H (n = 40; 22%)MSI-L/MSS (n = 144; 78%)Pa
Age (in yrs, mean ± SD)61.8 ± 10.061.9 ± 10.161.8 ± 10.40.97
Sex (% women)47.545.045.80.93
Family history of colorectal cancer (%)11.516.721.10.56
Body mass index (kg/m2, mean ± SD)26.0 ± 3.827.3 ± 5.425.5 ± 4.00.06
Ever smoked (%)69.167.570.40.72
Dietary factors (g/day, mean ± SD)
 Vegetables207.9 ± 124.2168.4 ± 75.4170.6 ± 82.10.88
 Fruit230.8 ± 180.6214.7 ± 167.1214.6 ± 160.60.996
 Red meat73.9 ± 34.169.2 ± 38.081.1 ± 35.20.07
 Fish18.2 ± 21.220.2 ± 26.722.3 ± 33.80.72
 Dairy products268.2 ± 244.3351.0 ± 337.4322.5 ± 330.10.63
 Alcoholb13.7 ± 17.618.7 ± 23.615.9 ± 25.30.53
 Dietary fiberb28.8 ± 8.327.6 ± 10.027.0 ± 8.30.70
 Calciumb (mg/day)1254.3 ± 406.31263.4 ± 436.91275.0 ± 424.40.88
 Vitamin Cb (mg/day)117.5 ± 53.893.5 ± 42.9105.5 ± 53.80.19
 Total energy intake (kJ/day)9362 ± 284410783 ± 376210197 ± 30530.31
Tumor characteristics
 Tumor location (% proximal)n.a.c67.534.7<0.01
 TNM stage (% I/II)n.a.75.058.30.07
  • a MSI-H versus MSI-L/MSS, t test for continuous variables and χ2 test for categorical variables.

  • b Adjusted for total energy intake by regression analysis, for women and men separately.

  • c n.a., not applicable.