Table 2.

Prevalence of anisometropia, myopia and scoliosis screening positively stratified by age.

Age	n	Prevalence of anisometropia	Prevalence of myopia	Prevalence of scoliosis screening positive	Difference of inter-eye SE (D)	SE of the less ametropic eye (D)
7	217 (2.3%)	7.8%	10.1%	6.9%	0.38 ± 0.54	−0.11 ± 1.01
8	729 (7.7%)	9.3%	16.2	4.0%	0.41 ± 0.47	−0.43 ± 1.08
9	733 (7.7%)	9.0%	23.7%	4.1%	0.43 ± 0.50	−0.73 ± 1.28
10	824 (8.7%)	16.0%	36.8%	4.6%	0.50 ± 0.59	−1.08 ± 1.38
11	781 (8.2%)	18.1%	48.5%	4.6%	0.57 ± 0.64	−1.65 ± 1.75
12	810 (8.5%)	24.8%	63.8%	2.2%	0.71 ± 0.74	−2.21 ± 1.84
13	776 (8.2%)	27.1%	69.7%	3.7%	0.78 ± 0.93	−2.62 ± 1.97
14	828 (8.7%)	27.5%	74.4%	3.9%	0.80 ± 0.91	−2.97 ± 2.08
15	815 (8.6%)	34.7%	82.6%	3.2%	0.92 ± 1.03	−3.36 ± 2.09
16	800 (8.4%)	35.6%	82.6%	3.8%	0.88 ± 0.85	−3.59 ± 2.20
17	783 (8.2%)	36.4%	86.0%	3.8%	0.95 ± 1.02	−4.00 ± 2.43
18	776 (8.2%)	34.4%	88.1%	5.0%	0.87 ± 0.84	−4.25 ± 2.42
19	629 (6.6%)	39.0%	89.7%	4.8%	0.95 ± 0.96	−4.41 ± 2.52
Total	9,501 (100.0%)	25.6%	79.8%	4.0%	0.72 ± 0.83	−2.54 ± 2.37
χ 2 (F)		404.50	2320.44	0.01	504.12	4441.84
p-value		0.000	0.000	0.911	0.000	0.000

Results of the chi-square test for trend test (Ptrend).