TABLE 2.
Risk of developing an adverse event by hospitalised patients, according to the characteristics of the patient or the hospital stay
| Characteristics of the patient or the hospital stay | Total, n (%) | Prevalence AE, n (%) | Odds Ratio | CI 95% | p |
|---|---|---|---|---|---|
| Age | |||||
| < 65 years | 4559 (46%) | 456 (10%) | 1.00 | ‐ | ‐ |
| ≥ 65 years | 5344 (54%) | 717 (13.4%) | 0.92 | 0.80 to 1.06 | .289 |
| Sex | |||||
| Woman | 4986 (50%) | 544 (10.9%) | 1.00 | ‐ | ‐ |
| Male | 4989 (50%) | 643 (12.9%) | 1.10 | 0.97 to 1.25 | .178 |
| Type of hospital | |||||
| Low complexity | 785 (7.9%) | 88 (11.2%) | 1.00 | ‐ | ‐ |
| Medium complexity | 3165 (31.7%) | 467 (14.8%) | 1.45 | 1.12 to 1.87 | <.001** |
| High complexity | 4972 (49.8%) | 578 (11.6%) | 1.00 | 0.78 to 1.28 | .965 |
| Psychiatric | 461 (4.6%) | 11 (2.4%) | 0.62 | 0.38 to 1.03 | .070 |
| Long‐term care hospital | 404 (4.1%) | 27 (6.7%) | 1.01 | 0.42 to 2.46 | .963 |
| Support | 188 (1.9%) | 16 (8.5%) | 0.89 | 0.50 to 1.58 | .691 |
| Type of admission | |||||
| Scheduled | 2939 (29.5%) | 303 (10.3%) | 1.00 | ‐ | ‐ |
| Urgent | 6993 (70.1%) | 878 (12.6%) | 1.43 | 1.20 to 1.70 | <.001** |
| Surgical intervention | |||||
| No intervention | 7309 (73.7%) | 703 (9.6%) | 1.00 | ‐ | ‐ |
| Intervention | 2666 (26.7%) | 484 (18.2%) | 2.15 | 1.79 to 2.57 | <.001** |
| Type of service | |||||
| Medical speciality | 5184 (52%) | 591 (11.4%) | 1.00 | ‐ | ‐ |
| Surgical speciality | 3123 (31.3%) | 414 (13.3%) | 1.01 | 0.84 to 1.21 | .991 |
| Psychiatric | 864 (8.7%) | 22 (2.6%) | 0.47 | 0.25 to 0.89 | .029* |
| Other services | 424 (4.2%) | 47 (11.1%) | 0.16 | 1.12 to 2.29 | .002* |
| Intensive medicine | 380 (3.8%) | 113 (29.7%) | 1.60 | 1.17 to 2.17 | .001* |
| Number of Intrinsic Risk Factors | |||||
| Absence | 1761 (17.6%) | 87 (4.9%) | 1.00 | ‐ | ‐ |
| 1 | 1729 (17.3%) | 169 (9.8%) | 1.99 | 1.50 to 2.64 | <.001** |
| 2 | 1743 (17.5%) | 203 (11.7%) | 2.38 | 1.80 to 3.14 | <.001** |
| ≥ 3 | 4742 (47.6%) | 728 (15.4%) | 3.24 | 2.50 to 4.19 | <.001** |
| Number of Extrinsic Risk Factors | |||||
| Absence | 2579 (25.7%) | 136 (5.3%) | 1.00 | ‐ | ‐ |
| 1 | 5408 (54.2%) | 613 (11.4%) | 1.37 | 1.10 to 1.70 | .020* |
| 2 | 1505 (15.1%) | 299 (19.9%) | 2.32 | 1.82 to 2.96 | <.001** |
| ≥ 3 | 483 (4.8%) | 139 (28.8%) | 2.54 | 1.82 to 3.54 | <.001** |
| Constant | ‐ | ‐ | 0.02 | 0.01 to 0.03 | <.001** |
Notes: AE: Adverse event; CI 95%: 95% confidence interval; p: estimated p‐value in logistic regression.
Multivariate logistic regression analysis, adjusted for: sex, age, type of hospital, type of admission, type of surgery, type of service and number of intrinsic and extrinsic risk factors.
*p < .050; **p < .001.