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Comparison of general conditions between the two groups.
| Group | n | M/F | Age (year) | APACHE II (score) | ICUICU duration (d) |
|---|---|---|---|---|---|
| Observation group | 41 | 22/19 | 58.63±12.30 | 21.63±5.10 | 4.22±0.76 |
| Control group | 38 | 20/18 | 57.42±12.57 | 22.26±4.79 | 4.18±0.65 |
| Χ2/t | 0.008 | 0.433 | 0.564 | 0.221 | |
| P | 0.927 | 0.666 | 0.574 | 0.826 |
