Table 1 Questions used to assess behaviours and prevalence of behaviours among survivors and controls

From: Clustering of health behaviours in adult survivors of childhood cancer and the general population

			Survivors ( n =835)		Controls ( n =1670)
Behaviour	Measurement	Recoded categories	n	%^a	n	%^a	P -value ^b
Smoking	Do you smoke? If yes, how many cigarettes a day?	None	634	76	987	65	<0.001
		Up to 9 cigarettes a day	106	13	289	17
		10–19 cigarettes a day	50	6	200	12
		One or more packs a day	40	5	141	8
Cannabis use	Have you ever consumed marijuana?	No, never	469	56	988	59	0.309
		Previously	275	33	512	31
		Currently	74	9	167	10
Drinking	Do you drink alcohol?	No alcohol consumption	86	10	177	11	0.818
		Alcohol consumption	749	90	1493	89
	How frequently do you usually consume alcoholic drinks (such as wine, beer, schnapps or any other hard liquor)?^c	Rarely	299	36	517	31	<0.001
		1–2 times a week	270	33	784	47
		>2 times a week	126	15	138	8
		1 or more drinks a day	51	6	54	3
	How many times have you drunk more than 8 units (males)/ 6 units (females) at a time in the past year?^c	No binge drinking	273	33	986	59	<0.001
		Less than once a month	272	33	321	19
		Once a month or more	170	20	144	9
Sporting activities	Do you engage in physical exercise or sporting activities? If yes, how intensively do you pursue these activities?	None	290	35	556	33	0.001
		Low to moderate intensity	269	32	480	29
		Quite intensively	198	24	417	25
		Very intensively	63	8	217	13
Diet	How many portions^d of fruit do you eat a day on average? How many portions of vegetables do you eat a day on average?	None (0 to <1 portion a day)	63	8	118	7	0.187
		Vegetable or fruit consumption (⩾1 portion a day)	156	19	358	21
		Vegetable and fruit consumption (⩾1 portion a day each)	604	72	1140	68
Skin protection	Do you protect yourself from sun exposure?	No	188	23	214	13	<0.001
		Yes	647	78	1455	87
	Have you ever had your skin or moles examined by a physician?	No, never	429	51	1046	63	<0.001
		Yes, more than 12 months ago	275	33	442	27
		Yes, in the last 12 months	112	13	127	8

^aPercentages don’t always add up to 100% due to missing values.
^bχ²-test.
^cAsked only to those with alcohol consumption (percentages don’t add up to 100%).
^d1 portion=size of your fist.

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Table 1 Questions used to assess behaviours and prevalence of behaviours among survivors and controls

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