Association between Pain in Adolescence and Low Back Pain in Adulthood: Studying a Cohort of Mine Workers

Table 2

Pain at teenage years and at age 20 years, by gender, age (categorized), and the relative risk (RR) with 95% confidence interval (95% CI) for gender and age groups.

	Pain teenage year; n (%)		RR (95% CI)	Pain 20 year; n (%)		RR (95% CI)
	Yes	No		Yes	No
Gender
Female	27 (57)	20 (43)	1.09 (0.78–1.51)	30 (68)	14 (32)	1.27 (0.94–1.71)
Male	38 (53)	34 (47)		36 (54)	31 (46)
Age (categorized)
20–40	37 (61)	24 (39)	0.80 (0.57–1.11)	37 (66)	19 (34)	0.80 (0.58–1.09)
>40	28 (48)	30 (52)		29 (53)	26 (47)

: number of participants. Missing values.