Table 4.

Relative risk of all-cause mortality among 926 men diagnosed with nonmetastatic prostate cancer by post-diagnostic dietary patterns

1234Ptrenda
Quartile of prudent dietary pattern
 Number231232232231
 Events97868268
 Follow-up time, py1,9232,0142,0792,077
 Incidence rate, #/10,000 py504427394327
 Model 1, HR (95% CI)b1.00 (ref.)0.84 (0.62–1.13)0.72 (0.53–0.99)0.59 (0.41–0.84)0.003
 Model 2, HR (95% CI)c1.00 (ref.)0.88 (0.64–1.20)0.83 (0.60–1.14)0.64 (0.44–0.93)0.02
Quartile of Western dietary pattern
 Number231232232231
 Events598876110
 Follow-up time, py2,0962,0352,0651,897
 Incidence rate, #/10,000 py281432368580
 Model 1, HR (95% CI)b1.00 (ref.)1.65 (1.18–2.30)1.43 (1.01–2.02)2.06 (1.44–2.95)<0.001
 Model 2, HR (95% CI)c1.00 (ref.)1.40 (0.99–1.97)1.33 (0.93–1.90)1.67 (1.16–2.42)0.01

Abbreviation: py, person years.

  • aPtrend calculated by modeling the median of each category as a continuous term. All statistical tests were two-sided.

  • bCox proportional hazards regression model adjusted for age at diagnosis (years, continuous) and total energy intake (kcal, continuous).

  • cCox proportional hazards regression model adjusted for variables in model 1 plus BMI (kg/m2, <25, 25–30, >30), smoking status (never, past, current), vigorous exercise (days/week, continuous), Gleason score (<7, 7, >7), clinical stage (T1/T2, T3), prostate-specific antigen level (ng/mL, <4, 4–9.9, 10–19.9, ≥20), time interval between diagnosis and FFQ completion (years, continuous), initial treatment after diagnosis (radiation, prostatectomy, others, unspecified or missing), and family history of prostate cancer (yes, no).