Table 2.
Results of meta-analysis based on demographic and clinical variables associated with lung cancer mortality.
| Risk factors | Numbers of studies (%) | Effect size (95% CI) |
Heterogeneity | |
|---|---|---|---|---|
| I2 | P-value | |||
| Older age | 20 (62.50) | 2.61(1.75-3.47) | 99.97 | 0.000 |
| BMI | 5 (15.63) | 0.96(0.82-1.09) | 73.43 | 0.064 |
| Gender: Male vs Female | 18 (56.25) | 1.47(1.08-1.87) | 94.77 | 0.000 |
| Smoking status: Yes vs No | 13 (40.63) | 2.15(1.19-3.11) | 99.40 | 0.000 |
| Cardiovascular: Yes vs No | 7 (21.90) | 1.57(1.28-1.86) | 48.34 | 0.000 |
| Stage: Yes vs No | 6 (18.75) | 1.60(1.21-1.99) | 32.55 | 0.020 |
| Hypertension: Yes vs No | 6 (18.75) | 1.19(1.04-1.34) | 0.00 | 0.000 |
| Diabetes: Yes vs No | 5 (15.63) | 1.43(1.14-1.72) | 15.23 | 0.000 |
| ILD | 2 (6.25) | 1.97(0.86-3.08) | 0.00 | 0.000 |
| Pneumonia | 2 (6.25) | 1.80(1.23-2.37) | 0.00 | 0.000 |