Prevalence of Chronic Pain, Treatments, Perception, and Interference on Life Activities: Brazilian Population-Based Survey

Table 1

Sample characterization by Brazilian region.

	Contacts	Respondents	Age in years	Female gender
		(%)	Mean (CI 95%)	(%)
Northern	59	33 (56)	36.8 (32.6–41.0)	17 (52)
Northeastern	138	96 (70)	36.3 (33.9–38.7)	49 (51)
Midwest	32	17 (53)	37.8 (28.1–47.6)	9 (56)
Southeastern	577	517 (90)	38.2 (37.1–39.3)	269 (52)
Southern	118	60 (51)	39.0 (35.6–42.4)	29 (48)
Total	924	723 (78)	37.9 (37.0–38.9)	373 (52)