Table 1:

Rates of triggers, adverse events (weighted and unweighted), and preventable and non-preventable adverse events, overall and by type of hospital

VariableNo. of patients (%)*RR (95% CI)
Overall
n = 3669
Type of hospital
Academic
n = 1692
Community
n = 1977
Patients with ≥ 1 trigger1083 (29.5)656 (38.8)427 (21.6)1.8 (1.6–2.0)
Patients with an adverse event237 (6.5)172 (10.2)65 (3.3)3.1 (2.3–4.1)
n = 237n = 172n = 65
Patients with a preventable adverse event106 (44.7)66 (38.4)40 (61.5)0.6 (0.4–0.8)
Patients with a nonpreventable adverse event131 (55.3)106 (61.6)25 (38.5)1.6 (1.2–2.3)
n = 3669n = 1692n = 1977
Patients with > 1 adverse event30 (0.8)26 (1.5)4 (0.2)7.6 (2.5–25.6)
Weighted rate of adverse events, % (95% CI)9.2 (5.1–13.3)11.2 (6.4–15.9)3.3 (1.2–5.3)NA§
Weighted rate of preventable adverse events, % (95% CI)3.6 (1.5–5.7)4.1 (1.2–7.0)2.0 (0.001–4.0)NA
  • Note: CI = confidence interval, NA = not applicable, RR = relative risk.

  • * Unless otherwise indicated.

  • The academic pediatric centre had a minimum of 1000 pediatric admissions in fiscal year 2008 and a full-time residency program in pediatric medicine and surgery; the community hospital also had a minimum of 1000 pediatric admissions in fiscal year 2008, but did not offer a full-time residency program in both pediatric medicine and surgery.

  • Point estimates and CIs were weighted to account for the total number of charts per hospital and the total number of hospitals per type per province.

  • § Relative risk is not available for weighted rates for comparison between types of hospital; p < 0.0001.

  • Relative risk is not available for weighted rates for comparison between types of hospital; p = 0.1.