Effect of Chinese eye exercises on change in visual acuity and eyeglasses wear among school-aged children in rural China: a propensity-score-matched cohort study

Table 3 Effect of self-reported compliance with eye exercises on change in uncorrected visual acuity between baseline and 9 and 21 months

	Full Sample^a				Matched Sample^b
Outcome	Regularly Practiced Eye Exercises	Did Not Regularly Practice Eye Exercises	Differences Between Means (95% CI)	P Value	Regularly Practiced Eye Exercises	Did Not Regularly Practice Eye Exercises	Differences Between Means (95% CI)	P Value
9-month uncorrected visual acuity change (LogMAR)	0.11 (0.19)	0.12 (0.18)	−0.009 (− 0.028, 0.010)	0.336	0.11 (0.18)	0.12 (0.19)	− 0.011 (− 0.029, 0.007)	0.232
21-month uncorrected visual acuity change (LogMAR)	0.19 (0.20)	0.21 (0.21)	−0.011 (− 0.031, 0.010)	0.320	0.19 (0.20)	0.21 (0.21)	− 0.012 (− 0.029, 0.005)	0.168

^aAge, sex, myopia power (diopters of most myopic eye), uncorrected visual acuity (LogMAR of better seeing eye), ownership of eyeglasses, and time spent on near work, middle distance activities and outdoor activity were included in the multiple regression
^bMatched using propensity score modeling on age, sex, myopia power (diopters of most myopic eye), uncorrected visual acuity (LogMAR of better seeing eye), ownership of eyeglasses, and time spent on near work, middle distance activities and outdoor activity

ISSN: 2662-7671