Research Article
Less Is More? The Impact of Trauma Volume on the Positive Rate of Head Computed Tomography Scans in Head Trauma Patients
Table 3
Correlation between monthly trauma volume and other survey variables.
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Cut-off value of trauma volume (person/month) | Low volume | High volume | | | | Number of months | Positive rate of HCTs | Number of months | Positive rate of HCTs | Overall performance | | mean (SD) | | mean (SD) | value* | AUC | value |
| 1100 | 0 | — | 20 | 29.13 (3.44) | — | — | — | 1150 | 1 | 29.1 | 19 | 29.13 (3.53) | 0.994 | 0.421 | 0.795 | 1200 | 3 | 32.4 (3.3) | 17 | 28.55 (3.21) | 0.072 | 0.804 | 0.101 | 1250 | 7 | 29.83 (3.49) | 13 | 28.74 (3.49) | 0.517 | 0.549 | 0.721 | 1300 | 13 | 30.12 (3.09) | 7 | 27.27 (3.49) | 0.076 | 0.703 | 0.143 | 1350 | 14 | 30.15 (2.97) | 6 | 26.73 (3.49) | 0.038 | 0.762 | 0.070 | 1400 | 18 | 30.02 (2.79) | 2 | 24.03 (2.03) | 0.002 | 0.972 | 0.032 | 1450 | 19 | 29.34 (3.39) | 1 | 25 | 0.228 | 0.895 | 0.193 | 1500 | 20 | 29.13 (3.44) | 0 | — | — | — | — |
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HCT: head computed tomography.
*Correlation is significant at the 0.05 level (2-tailed).
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