| Outcome/Subgroup | Studies | Number | MD (N–A) | SE (MD) | Effect estimate (95% CI) | Z test |
| aMD in CO at 25 minutes after turn | George 2002 | 14 | ‐0.0070 | 0.15 | ‐0.01 (‐0.30 to 0.29) | 0.05 (P value = 0.96) |
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