Comparison of errors and other factors
| Error or factor | Unscheduled returns(n = 250) | Non-returns(n = 250) | p value |
|---|---|---|---|
| *Percentage: comparisons using Pearson or Fisher’s χ2 exact test. | |||
| †Median (P5–P95): comparisons using Mann-Whitney U rank exact test. | |||
| ‡Only items reaching statistical significance are shown. | |||
| ¶Linear trend. | |||
| Prognostic error* | 48 | 14 | 0.000 |
| Treatment error* | 30 | 6 | 0.000 |
| Follow up care error* | 26 | 8 | 0.000 |
| Diagnostic error* | 20 | 4 | 0.000 |
| Information error (points)† | 5 (4.8–5.2) | 6 (5.8–6.2) | 0.000 |
| Diagnosis (erroneous or not) on 1st visit‡ | |||
| Hand wound* | 0.0 | 2.0 | 0.025 |
| Conjunctivitis* | 0.4 | 5.2 | 0.001 |
| Reason for 1st visit‡ | |||
| Increasing degree of seriousness† | 7 (1–12) | 6 (0–11) | 0.043 |
| Dermatological* | 0.8 | 5.2 | 0.004 |
| Abdominal pain* | 12.4 | 0.0 | 0.000 |
| Dyspnea* | 12.0 | 5.6 | 0.012 |
| Previous medical history‡ | |||
| Toxic habits* | 5.9 | 2.0 | 0.044 |
| Cardiopathy* | 8.1 | 4.4 | 0.029 |
| Care zone* | |||
| Resuscitation ward | 0.8 | 0.4 | – |
| Boxes | 63.2 | 61.2 | – |
| Triage | 36.0 | 38.4 | 0.738 |
| Age (years)† | 48 (18–86) | 41 (18–82) | 0.008 |
| Physician category* | |||
| Emergency specialists | 11.6 | 11.6 | – |
| Emergency staff | 57.6 | 63.2 | – |
| Residents | 30.8 | 25.2 | 0.359 |
| Observation ward admission* | 8.8 | 21.6 | 0.000 |
| Treatment applied* | 66.4 | 56.0 | 0.017 |
| Complementary studies* | |||
| CT scanning | 1.6 | 2.4 | 0.523 |
| Ultrasound | 1.2 | 1.2 | 1.000 |
| Radiography | 42.4 | 38.8 | 0.412 |
| ECG | 20.0 | 14.0 | 0.074 |
| Blood test | 51.2 | 34.8 | 0.000 |
| Urine test | 22.0 | 12.4 | 0.004 |
| Accessibility (min) | |||
| Ordinal scale† | 4 (1–5) | 3 (1–5) | 0.001 |
| >80* | 22.6 | 29.2 | – |
| 61–80* | 6.9 | 10.8 | – |
| 41–60* | 4.4 | 10.4 | – |
| 21–40* | 35.5 | 28.8 | – |
| <20* | 30.6 | 20.8 | 0.003; 0.002¶ |
| Time band (work shift)* | |||
| Night | 21.6 | 23.2 | – |
| Morning | 37.6 | 41.2 | – |
| Afternoon | 40.8 | 35.6 | 0.487 |
| Day of the week* | |||
| Sunday | 10.4 | 9.6 | – |
| Monday | 12.8 | 13.2 | – |
| Tuesday | 16.4 | 16.4 | – |
| Wednesday | 16.8 | 16.8 | – |
| Thursday | 10.4 | 10.8 | – |
| Friday | 13.2 | 16.4 | – |
| Saturday | 20.0 | 16.8 | 0.947 |
| Clinical history* | 89.8 | 91.1 | 0.840 |
| Nurse report* | 78.4 | 72.0 | 0.098 |
| Sex (M/F)* | 70.0/82.5 | 30.0/17.5 | 0.189 |
| Educational level* | |||
| University | 2.6 | 7.8 | – |
| Secondary | 24.6 | 38.1 | – |
| Primary | 47.4 | 39.4 | – |
| Unschooled | 25.4 | 14.7 | 0.000; 0.000¶ |
| Socioeconomic level* | |||
| High | 2.2 | 7.1 | – |
| Medium | 26.8 | 44.7 | – |
| Low | 71.0 | 48.2 | 0.000; 0.000¶ |