Skip to main content

Table 2 Incidences of adverse drug events, medication errors and preventable adverse drug events

From: The epidemiology of adverse drug events and medication errors among psychiatric inpatients in Japan: the JADE study

Unit n Patient-days ADEs Incidencea 95 % CI Crude rateb 95 % CI
Acute 341 16834 725 43.1 40.0–46.1 213 179–246
Nursing 75 4480 157 35.0 29.7–40.4 209 144–275
Medical 32 1419 73 51.4 40.0–62.9 228 88.6–368
Total 448 22733 955 42.0 39.4–44.6 213 184–243
Unit n Patient-days Medication Errors Incidencea 95 % CI Crude rateb 95 % CI
Acute 341 16834 262 15.6 13.7–17.4 76.8 62.0–91.7
Nursing 75 4480 78 17.4 13.6–21.2 104 56.3–152
Medical 32 1419 58 40.9 30.6–51.2 181 73.4–289
Total 448 22733 398 17.5 15.8–19.2 88.8 72.9–105
Unit n Patient-days Preventable ADEs Incidencea 95 % CI Crude rateb 95 % CI
Acute 341 16834 86 5.1 4.0–6.2 25.2 16.4–34.1
Nursing 75 4480 38 8.5 5.8–11.2 50.7 17.5–83.8
Medical 32 1419 42 29.6 20.8–38.4 131 35.9–227
Total 448 22733 166 7.3 6.2–8.4 37.1 25.8–48.3
  1. ADEs adverse drug events, CI confidence interval
  2. aPer 1000 patient-days
  3. bPer 100 admissions