Factors Affecting the Survival of Patients with Oligometastatic Non-Small-Cell Lung Cancer: A Meta-Analysis
Table 2
Fixed/random effects for oligometastatic non-small-cell lung cancer of overall survival.
Item
Group
Test of association
Model
Test of heterogeneity†,‡
Egger’s test for publication bias§
HR (95% CI)
Z
Q
I2 (%)
t
value
Sex
Female vs. male
0.9373 [0.7194; 1.2211]
0.48
0.6312
Fixed
3.10
0.2122
35.5
0.4997
0.705
Stage
Stage I-II vs. stage III
0.6268 [0.3455; 1.1372]
−1.54
0.1243
Random
7.03
0.0709
57.3
0.7702
0.5217
Nodal status
N2/N3 vs. N0/N1
1.6853 [1.225; 2.3194]
3.20
0.0014
Fixed
1.33
0.2482
25.0
—
—
Smoker
Smoker vs. nonsmoker
1.1686 [0.8225; 1.6602]
0.87
0.3845
Fixed
0.02
0.8953
0
—
—
Age
>60 vs. 60
0.9812 [0.7474; 1.2881]
−0.14
0.8913
Fixed
0.87
0.6479
0
0.70602
0.6086
Histology
Others vs. adeno
0.6056 [0.2762; 1.3277]
−1.25
0.2105
Random
6.82
0.0330
70.7
4.7318
0.1326
†Random effects model was used when the value for heterogeneity test is <0.05; otherwise, the fixed effect model was used. ‡ is considered statistically significant for Q statistics. §Egger’s test to evaluate publication bias, , is considered statistically significant. OR: odds ratio. CI: confidence interval.
