Table 4.

Test and retest reliability score of PES of the study participants (n = 50).

	Observer 1				Observer 2
	Baseline	End of 6 months	Difference	Baseline	End of 6 months	Difference	Effect size (d)	Agreement value
Group I (n = 25)	12.4 ± 1.9	11.3 ± 2.2	1.0 ± 1.0	12.0 ± 1.9	11.2 ± 2.0	0.8 ± 1.2	0.5	0.83
Group II (n = 25)	11.0 ± 1.6	10.4 ± 1.5	0.6 ± 1.0	10.8 ± 1.4	10.0 ± 1.3	0.8 ± 1.1	0.0	0.88

<0.40: poor agreement; 0.40–0.59: fair agreement; 0.60–0.74: good agreement; 0.75–1: excellent.