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. 2013 Oct 30;8(10):e78003. doi: 10.1371/journal.pone.0078003

Table 2. Spherical Equivalent (SE) in Right Eyes Determined by Autorefraction and Retinoscopy.

Age (yrs) N SE (D)
Mean SD Median Range Kurtosis Skewness
All children 2478 1.42(1.54) 0.79(0.76) 1.38(1.50) 15.25(14.50) * 13.61(10.78) # 0.05(0.39)
3 373 1.44(1.58) 0.76(0.713) 1.38(1.50) 5.62(5.620) 1.61(1.77) 0.39(0.38)
4 817 1.47(1.90) 0.82(0.78) 1.38(1.50) 9.00(8.75) 3.98(4.30) 0.80(0.94)
5 846 1.41(1.53) 0.82(0.82) 1.38(1.50) 15.25(14.00)* 29.23(20.82)# −0.85(−0.11)
6 442 1.33(1.45) 0.70(0.66) 1.25(1.50) 5.38(5.50) 1.76(1.89) 0.13(0.22)
P trend 0.03
Boys 1309 1.35(1.49) 0.71(0.68) 1.25(1.25) 6.00(6.12) 2.01(2.11) 0.49(0.56)
3 201 1.34(1.49) 0.72(0.66) 1.38(1.50) 4.75(4.75) 1.00(1.30) 0.05(−0.06)
4 433 1.46(1.59) 0.78(0.74) 1.38(1.50) 5.25(5.12) 2.41(2.63) 0.95(1.09)
5 437 1.33(1.46) 0.64(0.64) 1.25(1.50) 3.88(4.12) 0.39(0.51) 0.26(0.32)
6 238 1.22(1.34) 0.66(0.63) 1.25(1.25) 4.75(5.12) 1.93(2.02) −0.33(−0.20)
P trend <0.001
Girls 1169 1.49(1.61) 0.87(0.83) 1.50(1.50) 15.25(14.0) * 18.90(14.73) # 0.30(0.20)
3 172 1.56(1.67) 0.78(0.76) 1.50(1.63) 5.38(5.12) 1.89(1.75) 0.66(0.65)
4 384 1.48(1.62) 0.87(0.83) 1.50(1.50) 9.00(8.75) 5.08(5.43) 0.66(0.80)
5 409 1.49(1.60) 0.98(0.98) 1.50(1.50) 15.25(14.00)* 30.69(22.80)# −1.28(−0.37)
6 204 1.47(1.58) 0.71(0.66) 1.50(1.50) 4.50(4.25) 1.25(1.45) 0.50(0.61)
P trend 0.76

Data in parentheses were determined by retinoscopy.

*

There is one outlier with myopia of −8.50 D in the right eye (female, aged 5). When this outlier is excluded, the range decreases to 9.62(10.12), 7.25(8.00), 9.62(10.12) and 7.12(7.88) for all children, 5-year-old children, all girls and 5-year-old girls, respectively.

#

When this outlier is excluded, the kurtosis decreases to be 4.59(6.26), 7.55(10.71), 5.79(7.94) and 8.61(11.65) for that in all children, the 5-year-old children, all girls and the 5-year-old girls, respectively.