Table 1

RRs and 95% CIs for non-Hodgkin’s lymphoma by categories of fruits and vegetables in 1980

Categories of intake (servings/day)P for trendc
<33–3.94–4.95–5.9≥6
Fruits and vegetables
No. of cases7352311924
RR
Age-adjusted1.000.990.730.640.610.006
Multivariate-adjusteda1.001.020.760.690.620.02
95% CI0.71–1.460.50–1.170.41–1.160.38–1.02
Multivariate-adjustedb1.001.040.800.740.690.07
95% CI0.73–1.500.52–1.230.44–1.240.42–1.15
Categories of intake (servings/day)P for trendc
<11–1.92–2.9≥3
Fruits
No. of cases45685135
RR
Age-adjusted1.000.860.820.650.06
Multivariate-adjusteda1.000.880.870.700.16
95% CI0.60–1.290.57–1.310.44–1.12
Multivariate-adjustedb1.000.910.930.790.39
95% CI0.62–1.330.61–1.410.49–1.27
Vegetables
No. of cases351004222
RR
Age-adjusted1.001.030.720.580.008
Multivariate-adjusteda1.001.060.760.620.02
95% CI0.72–1.570.48–1.200.35–1.07
Multivariate-adjustedb1.001.080.770.650.04
95% CI0.73–1.600.49–1.230.37–1.13
Categories of intake (servings/unit time)P for trendc
<2/wk2–4/wk5–6/wk1/day≥2/day
Cruciferous vegetables
No. of cases1196317
RR
Age-adjusted1.000.700.660.02
Multivariate-adjusteda1.000.710.670.03
95% CI0.52–0.960.40–1.11
Multivariate-adjustedb1.000.720.690.04
95% CI0.53–0.980.41–1.15
Green leafy vegetables
No. of cases121401028
RR
Age-adjusted1.000.980.641.130.92
Multivariate-adjusteda1.001.010.671.180.87
95% CI0.71–1.450.35–1.280.78–1.79
Multivariate-adjustedb1.001.020.671.190.86
95% CI0.71–1.460.35–1.280.78–1.80
Yellow/orange vegetables
No. of cases1255222
RR
Age-adjusted1.000.650.940.17
Multivariate-adjusteda1.000.670.980.27
95% CI0.48–0.930.62–1.56
Multivariate-adjustedb1.000.691.040.39
95% CI0.50–0.960.65–1.65
Citrus fruits
No. of cases4037198122
RR
Age-adjusted1.001.060.821.180.800.39
Multivariate-adjusteda1.001.080.861.270.870.66
95% CI0.69–1.700.49–1.480.86–1.860.51–1.49
Multivariate-adjustedb1.001.110.901.340.970.98
95% CI0.71–1.740.52–1.550.91–1.970.57–1.66
  • a The multivariate models included age (5-year categories), total energy (quintiles), length of follow-up (seven periods), geographic region (Northeast, Midwest, South, California), cigarette smoking (never, past, present smoking of 1–14 cigarettes and ≥15 cigarettes/day), and height (<62 inches, ≥62 to<64 inches, ≥64 to <66 inches, ≥66 to <68 inches, or ≥68 inches).

  • b Additional controlling for beef, pork or lamb as a main dish (less than one serving per week, one serving per week, two to four servings per week, five to six servings per week, and greater or equal to one serving per day).

  • c Ps are two-sided (Wald’s test).