Table 8.
Subgroup analysis of lung imaging.
| Characteristics | Number of literatures | OR (95% CI) | P | I2 (%) |
|---|---|---|---|---|
| Overall | 12 | 100.60 (45.60, 221.96) | .002 | 62.0 |
| Year | ||||
| Before 2004 | 3 | 583.99 (70.00, 4871.97) | .222 | 33.5 |
| After 2005 | 9 | 73.10 (33.66, 158.79) | .011 | 59.8 |
| Bias | ||||
| High | 8 | 114.33 (39.92, 327.50) | .004 | 66.9 |
| Not high | 4 | 86.68 (22.12, 339.62) | .053 | 60.9 |
| Country | ||||
| China | 9 | 69.44 (31.92, 151.06) | .015 | 57.9 |
| Overseas | 3 | 527.26 (81.49, 3411.41) | .216 | 34.7 |
| Disease | ||||
| PE | 11 | 120.66 (52.42, 277.71) | .005 | 60.7 |
| ATPE | 1 | 20.95 (5.43, 80.91) | - | - |
| Gold standard | ||||
| Pulmonary arteriography | 1 | 139.40 (6.03, 3220.28) | - | - |
| Clinical | 10 | 112.97 (43.17, 295.59) | .001 | 68.5 |
| CTPA | 1 | 57.33 (19.66, 167.23) | - | - |
CI = confidence interval, CTPA = computed tomography pulmonary angiography, I2 = I-square test.