Table 4.

Frequency distributions (weighted percentages) of variables related to activity restrictions, body weight, smoking, and physical activity, by country and pattern of health-care use in the past 12 months: Joint Canada/US Survey of Health, 2002–03*

		United States			Canada
Variable	Category	GP only (n = 3565)	GP+DC (n = 511)	DC only (n = 84)	GP only (n = 2434)	GP+DC (n = 397)	DC only (n = 51)
Pain/activity limits	No pain/discomfort	79.3	74.5	79.7	81.0	73.2	90.3
Activity restrictions	Often	11.5	10.7	5.6	11.0	10.4	6.7
	Sometimes	19.7	24.6	23.5	20.2	27.3	12.3
	Never	67.3	63.6	70.2	67.8	61.8	79.4
Back/neck problems	Activity limiting	8.9	16.9	12.8	10.0	22.2	5.5
Smoking status	Current	20.8	20.4	15.7	24.0	19.9	49.6
	Past	24.6	28.3	29.1	29.2	34.8	7.6
	Never	54.0	50.9	55.2	46.5	44.9	42.9
Body weight	Under/normal weight	42.5	40.9	37.7	48.7	46.5	55.5
	Overweight	32.4	31.4	41.6	32.3	35.4	34.1
	Obese	20.8	23.7	18.3	15.4	15.7	8.6
Physical activity (past 3 months)	Active	20.4	22.6	18.5	25.7	27.8	21.5
	Moderate	20.0	21.2	18.2	26.3	25.7	21.7
	Inactive	56.5	54.3	60.7	47.0	45.6	56.8
Activity frequency (past 3 months)	Regular	55.6	56.1	56.5	66.3	68.3	58.6
	Occasional	16.1	19.2	13.2	15.8	18.6	17.4
	Infrequent	25.2	22.8	27.7	16.8	12.2	24.0

* Weighted percentages may not sum to 100 because of missing data or exclusion of certain categories; percentages weighted to account for age, sex, region (Canada only), and race/ethnicity (U.S. only); 3565, 511, and 84 represent 138,802,519, 20,060,412, and 3,453,164 adults, respectively, in the U.S.; 2434, 397, and 51 represent 16,555,719, 2,723,870, and 381,147 adults, respectively, in Canada.

GP = general practitioner or family doctor; DC = Doctor of Chiropractic.