Table 1.

Demographic characteristics of all participants

	Total	12 weeks of pregnancy	24 weeks of pregnancy	30 weeks of pregnancy	36 weeks of pregnancy
	(n = 275)	(n = 254)	(n = 249)	(n = 258)	(n = 245)
Age (years)	31.0 ± 4.4
Height (cm)	158.4 ± 5.6
Mass (kg)		52.8 ± 8.1	56.9 ± 7.9	59.7 ± 8.1	62.1 ± 7.9
Number of the women having LBP [Prevalence (%)]		150 [59.1]	183 [73.5]	188 [72.9]	180 [73.5]
Average intensity of the pain among the participants who had LBP		4.1 ± 2.3	4.3 ± 2.1	4.5 ± 2.3	4.8 ± 2.4
Median intensity of the pain among the participants who had LBP [25, 75 percentile]		2 [0, 4]	3 [0, 5]	3 [0, 5]	3 [0, 5]
Number of women having LBP during BADL [Percentage (%)]		58 [38.7]	97 [53.0]	95 [50.5]	116 [64.4]

Values are shown as mean ± standard deviation

LBP low back pain, BADL basic activities of daily living