Page 160 - Ultrasonography in Prehospital and Emergency Medicine - Rein Ketelaars
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Study population
Base population
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Chapter 7
Distribuon of trauma mechanisms and illnesses across the study populaon (abdominal ultrasound) and the base populaon
Figure 7.2 The distribution of trauma mechanisms and illnesses in the entire base population and study population
The five categories of PHUS timings are displayed in Table 7.5. Sensitivity in the early and the late group was respectively 26.9% and 31.8%. Specificity increased from 94.6% to 97.9%. Both differences in sensitivity and specificity where the time interval between (late) PHUS and in-hospital CT or laparotomy is shortest, were not statistically significant (p = .65, p = .12). PHUS is compared to CT or laparotomy for the two groups in Table 7.6.
The mean duration of patient contact was 38.9 (± 17.8) minutes. When the patients were not escorted by the physician, the mean and median were 21.9 (± 13.3) and 19.0 (13–28) minutes, when the patients were escorted respectively 42.6 (± 16.5) and 41.0 (32–50) minutes.
% of the population
