Table 3. Subgroup analysis of inappropriate admissions and hospitalizations .
| Variables | Number of studies | Inappropriate admission | I 2 | Number of studies |
Inappropriate hospitalization |
I 2 | |
| Gender | Male | 8 | 12% (9%-16%) | 88.7% | 5 | 13% (2%-24%) | 99.7% |
| Female | 8 | 12% (8%-16%) | 93.1% | 4 | 23% (6%-41%) | 99.7% | |
| Insurance | Yes | 8 | 12% (8%-18%) | 95.1% | 5 | 13% (2%-25%) | 99.7% |
| No | 8 | 13% (8%-18%) | 93.4% | 5 | 10% (0%-34%) | 0% | |
| Tool | AEP | 10 | 10% (9%-11%) | 94.9% | 11 | 13% (9%-16%) | 99.3% |
| ACCA | 1 | 11% (8%-15%) | - | - | - | - | |
| IR-AEP | 2 | 7% (5%-9%) | 0% | 2 | 13% (10%-16%) | 98.6% | |
| Hospital | Teaching | 11 | 9% (7%-11%) | 91.8% | 12 | 14% (10%-17%) | 99.4% |
| SSO | 1 | 7% (4%-11%) | - | 1 | 6% (5%-7%) | - | |
| Mixed | 1 | 23% (21%-25%) | - | - | - | - | |
| Length of stay | Less than 5 | 3 | 11% (7%-16%) | 42.5% | 3 | 16% (6%-27%) | 99.3% |
| 6-10 | 3 | 6% (3%-8%) | 67.4% | 3 | 21% (4%-39%) | 99.7% | |
| 11-15 | 3 | 13% (7%-19%) | 77.4% | 3 | 20% (10%-31%) | 99.1 | |
| More than 15 | 3 | 33% (0%-68%) | 99.5% | 3 | 49% (26%-72%) | 99.7 | |
| Marital status* | Single | 1 | 92% | 1 | 10.9% | ||
| Married | 1 | 0.07% | 1 | 16.1% | |||
|
Place of residence * |
Urban | 1 | 0.08% | 1 | 21% | ||
| Rural | 1 | 0.028 | 1 | 32.4% |
*Meta-analysis was not performed.