. 2015 Jun;15(2):429–437. doi: 10.4314/ahs.v15i2.16

Table 4.

Association of period prevalence rates of adolescent low back pain with age group, sex, history of injury and engagement in commercial activities

	PERIOD PREVALENCE
Variable	Life time		12-month		One-month		Point
	χ²	p	χ²	p	χ²	p	χ²	p
Age group	6.31	0.043*	8.73	0.013*	7.92	0.019*	10.35	0.006*
Sex	0.09	0.767	0.03	0.872	0.12	0.727	1.00	0.317
History of back injury	12.02	0.001*	7.12	0.008*	8.59	0.003*	2.92	0.087
Engagement in commercial activities	8.72	0.003*	6.51	0.011*	7.15	0.007*	5.02	0.025*