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Table 4 Effect of eye exercises on rates of eyeglasses wear at 9 and 21 months

From: 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

 Full SampleaMatched Sampleb
OutcomeRegularly Practiced Eye ExercisesDid Not Regularly Practice Eye ExercisesDifferences Between Means (95% CI)P ValueRegularly Practiced Eye ExercisesDid Not Regularly Practice Eye ExercisesDifferences Between Means (95% CI)P Value
9-month proportion of wearing eyeglasses0.34 (0.47)0.32 (0.47)0.209 (−0.085, 0.503)0.1630.35 (0.49)0.32 (0.47)0.027 (−0.019, 0.072)0.252
21-month proportion of wearing eyeglasses0.69 (0.46)0.70 (0.46)−0.082 (− 0.367, 0.2030.5720.69 (0.46)0.70 (0.46)−0.010 (− 0.054, 0.034)0.666
  1. 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
  2. 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