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

Table 3

Association between pain in teenage years and mean values of one-month low back pain (LBP) intensity and 12-month prevalence of LBP, presented by gender. Relative risk (RR) with 95% confidence interval (95% CI) of pain in teenage years for one-month LBP intensity and 12-month prevalence of LBP categories. Variance analysis of pain in teenage years and the two periods of daily self-reported LBP by text message (TM) (mean value), presented by gender. was considered statistically significant.

		Presence of pain in teenage years		RR (95% CI)
		Pain (%)	No pain (%)
LBP intensity, female	High (%)	12 (25.5)	9 (19.1)	0.99 (0.52–1.88)
	Low (%)	15 (31.9)	11 (23.4)
LBP intensity, male	High (%)	13 (18.1)	11 (15.3)	1.06 (0.55–2.04)
	Low (%)	25 (34.7)	23 (31.9)
LBP intensity, all	High (%)	25 (21.0)	20 (16.8)	1.04 (0.65–1.65)
	Low (%)	40 (33.6)	34 (28.6)
LBP 12-month prevalence, female	Yes (%)	24 (52.2)	15 (32.6)	1.13 (0.86–1.47)
	No (%)	3 (6.5)	4 (8.7)
LBP 12-month prevalence, male	Yes (%)	26 (36.6)	16 (22.5)	1.49 (0.99–2.26)
	No (%)	11 (15.5)	18 (25.4)
LBP 12-month prevalence, all	Yes (%)	50 (42.7)	31 (26.5)	1.33 (1.03–1.73)
	No (%)	14 (12.0)	22 (18.8)
		Pain	No pain	value
TM first period, female	Mean (SD)	1.68 (1.49)	1.24 (1.34)	0.304
		TM first period, male	Mean (SD)		.78 (1.10)	1.24 (1.43)	0.126
TM first period, all	Mean (SD)			1.15 (1.34)	1.24 (1.39)	0.724
		TM second period, female	Mean (SD)	1.68 (1.82)	1.10 (1.22)		0.246
TM second period, male	Mean (SD)			.83 (1.23)	1.58 (1.53)	0.034
		TM second period, all	Mean (SD)	1.17 (1.54)	1.39 (1.43)		0.449

: number of participants.