| Outcome/Subgroup | Studies | Number | MD (S–N) | SE (MD) | Effect estimate (95% CI) | Z test |
| aMD in CO at 25 minutes after turn | George 2002 | 15 | ‐0.013 | 0.207 | ‐0.01 (‐0.42 to 0.39) | 0.06 (P value = 0.95) |
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