Table 7. Subgroup analysis of the effects of COVID-19 without fever on sperm quality.
| Variable | Subgroup | No. | p-valuea | SMD (95% CI) | I2 (%) | p-valueb | p-valuec | |
|---|---|---|---|---|---|---|---|---|
| Volume (mL) | Without fever | ≥90 d | 2 | 0.760 | 0.092 (-0.498 to 0.682) | 0.0 | 0.317 | - |
| <90 d | 0 | - | - | - | - | - | ||
| Sperm concentration (×106/mL) | Without fever | ≥90 d | 2 | 0.299 | -0.331 (-0.955,0.294) | 0.0 | 0.317 | - |
| <90 d | 2 | 0.513 | -0.270 (-1.079,0.539) | 54.4 | 0.317 | - | ||
| Total motility (%) | Without fever | ≥90 d | 2 | 0.045 | -1.304 (-2.577,-0.032) | 66.3 | 0.317 | - |
| <90 d | 1 | - | - | - | - | - | ||
| Progressive sperm motility (%) | Without fever | ≥90 d | 2 | 0.002 | -1.089 (-1.764,-0.414) | 25.0 | 0.317 | - |
| <90 d | 1 | - | - | - | - | - | ||
No.: number of studies, SMD: standard mean difference, CI: confidence interval, -: not available.
ap-value of effect. bp-value of Begg’s test for publication bias. cp-value of Egger’s test for publication bias.
The bold values indicate statistical significance (p<0.05).