Prognostic value of ground glass opacity on computed tomography in pathological stage I pulmonary adenocarcinoma: A meta-analysis

Table 2 Results of meta-analysis

	No. studies	HR	95%CI	P value	I2 (%)	P value
Overall survival	8 [18,20-23,27-29]	0.44	0.34-0.59	< 0.001	24.3	0.236
> 01	3 [18,20,21]	0.14	0.05-0.36	< 0.001	0.0	0.943
01	5 [22,23,27-29]	0.49	0.37-0.66	< 0.001	0.0	0.583
Disease-free survival	8 [19-21,23,24,26-28]	0.35	0.18-0.70	0.003	88.2	< 0.001
> 01	5 [19-21,23,26]	0.29	0.10-0.87	0.027	89.1	< 0.001
01	3 [24,27,28]	0.42	0.23-0.75	0.004	49.8	0.136

¹Subgroup analysis was conducted based on the cutoff values of ground glass opacity proportion.

HR: Hazard ratio; CI: Confidence interval.