Table 3.
Subgroup analysis of refractive errors in Chinese children
| Myopia |
High myopia |
Hyperopia |
Astigmatism |
|||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
N |
% (95% CI) |
Heterogeneity |
N |
%(95% CI) |
Heterogeneity |
N |
%(95% CI) |
Heterogeneity |
N |
% (95% CI) |
Heterogeneity |
|||||
|
I2 (%) |
P |
I2 (%) |
P |
I2 (%) |
P |
I2 (%) |
P |
|||||||||
|
Region: | ||||||||||||||||
| Rural |
13 |
27.1(26.7-27.5) |
99.8 |
<0.001 |
6 |
0.9(0.3-2.9) |
99.2 |
<0.001 |
6 |
4.0(1.3-11.4) |
99.8 |
<0.001 |
8 |
9.9(5.9-16.0) |
99.6 |
<0.001 |
| Urban |
15 |
51.2(50.8-51.5) |
99.8 |
<0.001 |
10 |
3.0(2.3-3.8) |
97.7 |
<0.001 |
11 |
5.4(3.4-8.4) |
99.4 |
<0.001 |
8 |
20.6(15.0-27.5) |
99.6 |
<0.001 |
|
District: | ||||||||||||||||
| SC |
19 |
31.4(31.0-31.7) |
99.9 |
<0.001 |
9 |
0.5(0.3-0.8) |
94.6 |
<0.001 |
11 |
10.8(10.5-11.1) |
99.4 |
<0.001 |
11 |
12.2(8.2-17.8) |
99.6 |
<0.001 |
| NC |
15 |
55.1(54.9-55.3) |
99.8 |
<0.001 |
11 |
4.6(3.6-5.7) |
99.0 |
<0.001 |
7 |
27.8(27.1-28.6) |
99.8 |
<0.001 |
5 |
18.5(12.7-26.1) |
99.5 |
<0.001 |
| HMT |
5 |
53.0(52.6-53.4) |
99.8 |
<0.001 |
4 |
4.9(3.5-6.9) |
99.1 |
<0.001 |
2 |
5.3(4.9-5.8) |
98.4 |
<0.001 |
2 |
35.7(20.4-54.6) |
99.9 |
<0.001 |
|
Study year: | ||||||||||||||||
| -2000 |
4 |
49.3(37.9-60.7) |
99.9 |
<0.001 |
3 |
5.7(4.0-8.1) |
99.1 |
<0.001 |
2 |
3.2(2.1-4.9) |
94.9 |
<0.001 |
3 |
29.4(16.0-47.6) |
99.9 |
<0.001 |
| 2000-2010 |
13 |
36.5(32.6-40.5) |
99.8 |
<0.001 |
4 |
3.2(2.4-4.2) |
94.1 |
<0.001 |
9 |
4.1(2.2-7.4) |
99.3 |
<0.001 |
8 |
9.5(5.2-16.7) |
99.6 |
<0.001 |
| 2010- | 23 | 36.6(31.3-42.4) | 99.9 | <0.001 | 15 | 2.1(1.5-2.9) | 99.4 | <0.001 | 7 | 5.9(3.4-9.9) | 99.5 | <0.001 | 6 | 18.3(13.0-25.1) | 99.5 | <0.001 |
N – number of studies, % - pooled prevalence, SC –Southern China, NC – Northern China, HMT – Hong Kong, Macau and Taiwan