Table 2.
Subgroup analysis and meta-regression of the association between NOX4 expression and overall survival in cancer patients.
| Subgroup | Heterogeneity | Meta-regression | |||||
|---|---|---|---|---|---|---|---|
| Number of studies | Number of patients | Pooled HR (95% CI) | p value | I2 (%) | p value | p value | |
| Cancer type | 0.09 | ||||||
| GI cancer | 4 | 1537 | 1.83 (1.39-2.42) | < 0.001 | 40.90 | 0.18 | |
| HCC | 3 | 738 | 0.67 (0.36-1.27) | 0.23 | 85.89 | < 0.001 | |
| Others | 2 | 400 | 1.51 (1.13-2.03) | 0.01 | 0.00 | 0.37 | |
| Sample size | 0.23 | ||||||
| Less than 200 | 4 | 498 | 1.66 (1.13-2.43) | 0.01 | 72.20 | 0.01 | |
| More than 200 | 5 | 2177 | 1.03 (0.57-1.86) | 0.86 | 90.7 | < 0.001 | |
| NOX4 detection | 0.77 | ||||||
| mRNA | 4 | 1950 | 1.20 (0.63-2.29) | 0.29 | 89.61 | < 0.001 | |
| Protein | 5 | 725 | 1.39 (0.82-2.34) | 0.16 | 89.10 | < 0.001 | |
| Survival analysis | 0.62 | ||||||
| MVA | 5 | 830 | 1.44 (0.85-2.44) | 0.16 | 83.72 | < 0.001 | |
| UVA | 4 | 1845 | 1.15 (0.62-2.15) | 0.26 | 94.59 | < 0.001 | |
CI, confidence interval; GI, gastrointestinal; HCC, hepatocellular carcinoma; HR, hazard ratio; MVA, multivariate analysis; NOX4, NADPH oxidase 4; UVA, univariate analysis.