A case control study investigating the effects of levels of physical activity at work as a risk factor for prostate cancer

Table 3 Cumulative occupational exposures for prostate cancer by binary logistic regression

Binary logistic regression
Exposure total	Exposure	Cumulative exposure		Controls	Cases	OR*	95% CI	p for trend (unadjusted model)
Manual handling of burdens (score)	1^st Tertile	0	- ≤ 2.654	472	534	1.00
	2^nd Tertile	> 2.655	- ≤ 6.808	440	443	0.96	0.79 – 1.15
	3^rd Tertile	> 6.808		437	459	1.01	0.84 – 1.22
	Continuous			1349	1436			0.82
Sedentary work (score)	Unexposed	0		843	912	1.00
	1^st Tertile	>0	– ≤ 1.6	158	177	0.96	0.78 – 1.25
	2^nd Tertile	>1.6	- ≤ 5.108	180	161	0.78	0.62- 0.99
	3^rd Tertile	>5.108		168	186	1.02	0.81- 1.29
	Continuous			1349	1436			0.94
Work load (score)	1^st Tertile	> 0	- ≤ 102	426	366	1.00
	2^nd Tertile	> 103	- ≤ 127	466	496	1.20	0.99 – 1.46
	3^rd Tertile	> 128		457	574	1.34	1.09 – 1.65
	Continuous			1349	1436			0.001
Total cumulative activity (score)	1^st Tertile	> 0	- ≤ 69	442	446	1.00
	2^nd Tertile	> 69	- ≤ 98	455	496	1.16	0.95 – 1.40
	3^rd Tertile	> 98		452	494	1.19	0.97 – 1.46
	Continuous			1349	1436			0.11
Physical workload (score)	1^st Tertile	0	- ≤ 2.656	456	486	1.00
	2^nd Tertile	> 2.656	- ≤ 7.132	448	463	1.06	0.87 – 1.28
	3^rd Tertile	> 7.132		445	487	1.15	0.95 -1.40
	Continuous			1349	1436			0.13

*Odds ratios (OR) and associated 95% confidence intervals (95% CI) adjusted for Age, Family History and SEIFA Index of Economic Resources.

ISSN: 1476-069X