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Table 4 The proportion of normal SA (The values of SA satisfied Percival’s criterion)

From: Relationship between age, refractive errors and motor fusion in a normal Chinese adult population: a cross-sectional study

  20–29 years 30–39 years 40–49 years 50–59 years Total
Normal 17 (63.0 %) 37(52.9 %) 35(31.3 %) 24 (34.3 %) 111
Abnormal 10 (37.0 %) 33(47.1 %) 41(53.9 %) 46 (65.7 %) 132
Total 27 70 76 70 243
  1. SA: subjective angle. χ2 = 8.283, p = 0.041