TABLE 3. Relative risks (RR) of endometrial cancer according to different measures of physical activity at baseline.

	No. of women	No. of cases	Age-adjusted RR (95% confidence interval)	Multivariable-adjusted RRa (95% confidence interval)
Total energy expenditure, MET-hours/week:
<2.7	8124	80	1.42 (1.01–1.98)	1.15 (0.79–1.67)
2.7–8.4	8128	66	1.14 (0.81–1.62)	0.99 (0.68–1.44)
8.4–20.4	8221	58	1.97 (0.68–1.40)	0.93 (0.64–1.35)
≥20.4	8169	60	1.00 (referent)	1.00 (referent)
			p,trend = 0.02	p.trend = 0.39
Time spent walking per week:
No regular walking	6727	55	1.07 (0.76–1.50)	0.88 (0.61–1.27)
1–59 minutes	8682	65	0.99 (0.71–1.37)	0.90 (0.64–1.27)
1.0–1.5 hours	6960	61	1.13 (0.81–1.57)	1.07 (0.76–1.51)
≥ 2 hours	10273	83	1.00 (referent)	1.00 (referent)
			p.trend = 0.87	p.trend = 0.37
Usual walking pace, km/hr:
No regular walking	5825	48	1.12 (0.78–1.61)	0.82 (0.55–1.22)
<3.2	3815	44	1.55 (1.07–2.24)	1.08 (0.72–1.62)
3.2–4.7	12459	94	1.00 (0.74–1.35)	0.85 (0.62–1.16)
≥ 4.8	10543	78	1.00 (referent)	1.00 (referent)
			p.trend = 0.19	p.trend = 0.54
Vigorous energy expenditure, MET-hours/week:
None (0)	18875	177	1.00 (0.69–1.47)	0.87 (0.58–1.31)
1–3.3	3455	26	0.84 (0.50–1.42)	0.71 (0.41–1.23)
3.3–7.5	3448	14	0.46 (0.24–0.86)	0.38 (0.20–0.76)
7.5–15.0	3531	16	0.49 (0.27–0.90)	0.51 (0.27–0.93)
<15.0	3333	31	1.00 (referent)	1.00 (referent)
			p.trend = 0.04	p.trend = 0.23

^aAdjusted for age, BMI, smoking status, alcohol use, saturated fat intake, fiber intake, fruit/vegetable intake, parity, use and type of hormone therapy, and menopausal status.