Vegetable and fruit consumption and cancer of unknown primary risk: results from the Netherlands cohort study on diet and cancer

Table 2 Characteristics of Cancer of Unknown Primary cases and subcohort members in the Netherlands Cohort Study at baseline

	Subcohort members				Cancer of Unknown Primary cases
	(n = 4005)				(n = 867)
Characteristic	n	(%)	mean	SD	n	(%)	mean	SD
Age at baseline (years)
55-59	1550	38.7			265	30.6
60-64	1389	34.7			340	39.2
65-69	1066	26.6			262	30.2
Sex
Men	1941	48.5			537	61.9
Women	2064	51.5			330	38.1
Total vegetable and fruit consumption (g/day)			364.5	152.4			350.5	145.5
Men			342.4	149.6			329.5	142.4
Women			385.2	152.1			384.7	144.3
Total vegetable consumption (g/day)			189.0	75.5			185.8	74.2
Men			187.0	76.0			182.3	75.1
Women			190.9	75.1			191.6	72.5
Total fruit consumption (g/day)			175.5	118.2			164.7	113.8
Men			155.4	114.5			147.3	110.4
Women			194.4	118.5			193.1	113.7
Ethanol intake (grams/day) ^a
Abstainers	920	23.6			155	18.2
< 5	1105	28.4			220	25.9
5- < 15	896	23.0			196	23.0
15- < 30	623	16.0			136	16.0
≥ 30	354	9.1			144	16.9
Cigarette smoking status
Never smokers	1500	37.5			252	29.1
Ex smokers	1439	35.9			304	35.1
Current smokers	1066	26.6			311	35.9
Frequency of cigarette smoking (N/day) ^a			15.7	10.0			17.8	10.1
Duration of cigarette smoking (years) ^a			31.8	12.1			35.3	11.7
Body Mass Index at baseline (kg/m^b)			25.0	3.1			24.9	3.0
Non-occupational physical activity (min/day)
≤ 30	838	21.2			181	21.2
> 30-60	1240	31.4			261	30.6
> 60-90	834	21.1			154	18.1
> 90	1043	26.4			257	30.1
Level of education (years of education)
Primary	1137	28.9			229	26.6
Lower vocational	857	21.5			172	20.0
Secondary and medium vocational	1423	35.7			328	38.1
University and higher vocational	566	14.2			131	15.2
Diabetes
Yes	138	3.5			31	3.6
First grade family history of cancer ^c
Yes	1836	45.8			422	48.7

ISSN: 1471-2407