Table 2. Characteristics of the LBP among the study population .

Variable	LBP
	Boys	Girls
Prevalence of LBP, No. (%)	218 (29.0)	335 (39.0)
Pain severity (scale 0–5), mean (SD)	2.5 (1.25)	3.1 (1.32) a
Disruption of normal activities, No. (%)	115 (52.9)	192 (57.1)
Absent from school, No. (%)	38 (17.5)	32 (9.5)
Visit the doctor, No. (%)	23 (10.6)	48 (14.3)

Abbreviation: LBP, low back pain.

^a Ordinal logistic regression (P < 0.05).