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|
Age (y)
|
Prevalence of Myopia (N1/N2)
|
χ2
|
P value
|
|---|
|
Total
|
Boys
|
Girls
|
|---|
|
3
|
1.9 % (3/159)
|
1.2 % (1/80)
|
2.5 %(2/79)
|
0.353
|
0.553
|
|
4
|
2.6 % (6/235)
|
3.6 % (5/139)
|
1.0 % (1/96)
|
1.49
|
0.22
|
|
5
|
1.7 % (4/234)
|
2.3 % (3/128)
|
0.9 % (1/106)
|
0.692
|
0.406
|
|
6
|
8.6 % (199/2304)
|
7.8 % (92/1173)
|
9.5 % (107/1131)
|
1.91
|
0.167
|
|
7
|
14.5 % (427/2936)
|
15.1 % (237/1569)
|
13.9 % (190/1367)
|
3.447
|
0.07
|
|
8
|
25.9 % (678/2621)
|
25.3 % (346/1365)
|
26.4 % (332/1256)
|
0.402
|
0.526
|
|
9
|
37.2 % (904/2431)
|
34.7 % (432/1245)
|
39.8 % (472/1186)
|
6.76
|
0.009*
|
|
10
|
48.7 % (1138/2336)
|
45.9 % (546/1190)
|
51.7 % (592/1146)
|
7.795
|
0.005*
|
|
11
|
56.5 % (1248/2210)
|
53.4 % (611/1145)
|
59.8 % (637/1065)
|
9.338
|
0.002*
|
|
12
|
66.2 % (1075/1623)
|
62.2 % (532/855)
|
70.7 % (543/768)
|
13.0
|
< 0.001**
|
|
13
|
72.1 % (1031/1429)
|
69.1 % (509/737)
|
75.4 % (522/692)
|
7.21
|
0.007*
|
|
14
|
74.9 % (702/937)
|
71.1 % (350/492)
|
79.1 % (352/445)
|
7.89
|
0.005*
|
- N: number, N1: the number of myopic children, N2: the total number of children, * represents P < 0.05, ** represents P < 0.001
