Table 2.

Relationships between mushroom consumption and incident prostate cancer (n = 36,499)

	Mushroom consumption			p‐trend1
	<1 time/week	1–2 times/week	≥3 times/week
All participants	15,958	13,124	7,417
Person‐years	261,927	204,128	108,342
Incident prostate cancer (%)	3.42	3.26	3.11
Incidence rate/1,000 person‐years	2.08	2.10	2.13
Crude	1.00	0.95 (0.83, 1.07)	0.84 (0.72, 0.98)	0.033
Model 12	1.00	0.94 (0.82, 1.06)	0.84 (0.72, 0.98)	0.025
Model 23	1.00	0.92 (0.81, 1.05)	0.83 (0.70, 0.98)	0.023

Analysis by the Cox proportional hazards model.

¹ Probability value for trend was computed by entering the categories as a continuous term (score variable: 1, 2 or 3) in the Cox model.

² Model 1 was adjusted for family history of cancer (yes or no), BMI (<18.5, 18.5–25, 25–30, ≥30 or missing), education level (age at last school graduation: <19 years, ≥19 years or missing), smoking status (never, former, current or missing), alcohol drinking (never, former, current or missing) and time spent walking (<0.5 hr/day, 0.5–1 hr/day, ≥1 hr/day or missing).

³ Model 2 was adjusted as for Model 1 plus five groups of consumption volume of meat, vegetables, fruit, dairy products, coffee and energy intake (quartile categories or missing).