Table 2

Longitudinal changes in participants with or without myopic shift across the age groups (mean±SD)

ParametersTotal (n=769)Age 6–7 years (n=154)Age 8–9 years (n=238)Age 10–11 years (n=97)Age 12–13 years (n=120)Age 14–15 years (n=101)Age 16–17 years (n=59)P value
SER (D)
 Total−0.43±0.47*‡−0.37±0.53*‡−0.46±0.52*‡−0.52±0.48*‡−0.44±0.41*‡−0.36±0.32*‡−0.36±0.33*‡0.04
 Myopic shift−0.85±0.33*‡−0.92±0.39*‡−0.91±0.35*‡−0.92±0.33*‡−0.79±0.24*‡−0.67±0.18*‡−0.67±0.19*‡<0.01
 Non-myopic shift−0.09±0.23*‡−0.03±0.25−0.05±0.25†−0.13±0.21*‡−0.09±0.19*‡−0.16±0.21*‡−0.16±0.23*‡<0.01
 P value<0.01<0.01<0.01<0.01<0.01<0.01<0.01
AL (mm)
 Total0.24±0.28*‡0.33±0.30*‡0.27±0.33*‡0.28±0.23*‡0.21±0.17*‡0.13±0.20*‡0.08±0.10*‡<0.01
 Myopic shift0.36±0.31*‡0.54±0.33*‡0.40±0.39*‡0.40±0.15*‡0.28±0.16*‡0.19±0.25*‡0.12±0.09†<0.01
 Non-myopic shift0.15±0.20*‡0.20±0.20*‡0.16±0.23*‡0.17±0.25*‡0.13±0.15*‡0.09±0.15*‡0.05±0.11†<0.01
 P value<0.01<0.01<0.01<0.01<0.010.020.01
RT (μm)
 Total2±13*‡7±15*‡4±14*‡1±90±12−2±11−2±10<0.01
 Myopic shift2±12*‡8±17*‡2±120±111±8−1±11−2±10<0.01
 Non-myopic shift3±14*‡7±14*‡6±15*‡1±80±15−2±11−2±11<0.01
 P value0.340.800.050.430.570.580.76
GCC (μm)
 Total0±103±12*‡0±9−1±8−2±9*‡−3±8*‡−3±8*‡<0.01
 Myopic shift0±95±14†0±8−2±9−2±7†−3±8†−4±5*‡<0.01
 Non-myopic shift0±103±10†1±10−1±6−3±11−3±8*‡−3±9<0.01
 P value0.790.290.490.310.700.960.57
ORL (μm)
 Total3±6*‡4±5*‡3±8*‡2±5*‡3±6*‡1±51±5<0.01
 Myopic shift2±6*‡3±5*‡2±6*‡2±5†3±5*‡2±5†2±70.81
 Non-myopic shift3±7*‡4±5*‡5±9*‡2±4*‡2±6*‡1±50±4<0.01
 P value0.070.11<0.010.980.560.510.25
  • *P<0.01.

  • †P<0.05.

  • ‡P<0.05 after Bonferroni correction.

  • AL, axial length; GCC, ganglion cell complex; ORL, outer retinal layer; RT, retinal thickness; SER, spherical equivalent refraction.