Table 2.
Stratified | Pooled HR | Heterogenety | Meta regression |
---|---|---|---|
analysis | (95% CI) | (P-value) | |
Public year | 0.794 | ||
After 2015 | 1.70 [1.38–2.10] | Q = 54.51, P < 0.01, I2 = 78.0% |
|
Before 2015 | 1.67 (1.22–2.29) | Q = 16.95, P < 0.01, I2 = 71.0% |
|
Country | 0.121 | ||
China | 1.44 [1.19–1.75] | Q = 38.22, P < 0.01, I2 = 74.0% |
|
Non-China | 2.22 [1.58–3.13] | Q = 30.27, P < 0.01, I2 = 77.0% |
|
Population | 0.683 | ||
SCLC | 1.86 [1.33–2.61] | Q = 40.12, P < 0.01, I2 = 85.0% |
|
NSCLC | 1.60 [1.33–1.92] | Q = 31.52, P < 0.01, I2 = 65.0% |
|
Follow-up months | 0.519 | ||
≥60 months | 1.89 [1.42–2.51] | Q = 49.03, P < 0.01, I2 = 82.0% |
|
<60 months | 1.52 [1.26–1.83] | Q = 22.44, P < 0.01, I2 = 64.0% |
|
Design | 0.074 | ||
RS | 1.21 [0.96–1.53] | Q = 13.8, P < 0.01, I2 = 78.0% |
|
PCS | 1.93 [1.57–2.37] | Q = 49.21, P < 0.01, I2 = 72.0% |
|
Quality Score | 0.537 | ||
<6 | 1.55 [1.15–2.09] | Q = 33.88, P < 0.01, I2 = 85.0% |
|
≥6 | 1.74 [1.43–2.12] | Q = 34.18, P < 0.01, I2 = 65.0% |
|
Stage | <0.001 | ||
NALC | 1.29 [1.15–1.44] | Q = 26.23, P < 0.01, I2 = 58.0% |
|
ALC | 2.91 [2.24–3.78] | Q = 6.38, P = 0.38, I2 = 6.0% |
SCLC, small cell lung cancer; NSCLC, non-small-cell lung cancer; LC, lung cancer; NALC, non-advanced lung cancer; ALC, advanced lung cancer; RS, retrospecitive study; PCS, prospective cohort study; HR, hazard ratio.