Table 2: Spherical equivalent (D) among examined boys and girls.

Age (years)BoysGirls
Mean ± SDMean ± SD

6–9 (≥6 and <9)+0.95 ± 1.04+0.99 ± 1.210.91
9–13 (≥9 and <13)+0.55 ± 1.23+0.45 ± 1.050.047
13–16 (≥13 and <16)+0.54 ± 1.08+0.32 ± 1.140.0093

SD: standard deviation. Mann–Whitney test.