Nationwide incidence of VCI using random-efects meta-analysis and subgroup meta-analysis
| Variable |
No.of articles |
No.of participants（100 Person-Year） |
No.of cases |
Incidence（100 Person-Year） |
tau |
Subgroup Diference |
| Pooled analysis |
10 |
1043 |
289 |
0.29 |
0.5043 |
NA |
| Subgroup |
|
|
|
|
|
|
| Survey period |
|
|
|
|
|
|
| Overall |
10 |
1043 |
289 |
0.29 |
0.5043 |
0.0043 |
| <1990 |
3 |
223 |
69 |
0.31 |
0.1534 |
|
| 1990~1999 |
4 |
583 |
121 |
0.2 |
0.3149 |
|
| >1999 |
3 |
237 |
99 |
0.49 |
0.3152 |
|
| Diagnosis of VCI |
|
|
|
|
|
|
| Overall |
10 |
1043 |
289 |
0.29 |
0.5043 |
0.0084 |
| Criteria 1 |
5 |
767 |
217 |
0.3 |
0.5166 |
|
| Criteria 2 |
2 |
111 |
16 |
0.14 |
0 |
|
| Criteria 3 |
0 |
0 |
0 |
0 |
0 |
|
| Criteria 4 |
3 |
165 |
56 |
0.4 |
0.3941 |
|
| Study quality |
|
|
|
|
|
|
| Overall |
10 |
1043 |
289 |
0.29 |
0.5043 |
0.1281 |
| Low quality |
4 |
379 |
143 |
0.21 |
0.4851 |
|
| Medium quality |
1 |
164 |
56 |
0.34 |
0 |
|
| High quality |
5 |
500 |
90 |
0.41 |
0.4808 |
|
| Province |
|
|
|
|
|
|
| Overall |
9 |
644 |
198 |
1.27 |
0.5348 |
<0.0001 |
| Beijing |
3 |
216 |
68 |
0.33 |
0.0025 |
|
| Guangdong |
1 |
17 |
11 |
0.65 |
0 |
|
| Tianjin |
1 |
56 |
32 |
0.57 |
0 |
|
| Shanghai |
3 |
286 |
79 |
0.27 |
0.4144 |
|
| Shaanxi |
1 |
69 |
8 |
0.12 |
0 |
|
| Note: |
|
This is a footnote. |