Table 1

Categories of incidence of adverse events and negligence

CategoryTiming of adverse eventAdverse events*Adverse events due to negligence*
*For each category the first row of values indicates the sample count, and the second row the weighted population total. Data are presented as number (%).
1Occurred and discovered during index hospitalization647 (50.6)156 (51.0)
55046 (49.4)15257 (51.2)
2Occurred during index hospitalization, discovered during subsequent outpatient care78 (6.1)7 (2.3)
6327 (5.7)776 (2.6)
3Occurred during index hospitalization, discovered during subsequent hospitalization67 (5.2)19 (6.2)
6526 (5.9)1857 (6.2)
4Occurred during outpatient care before index hospitalization but discovered during index hospitalization167 (13.1)59 (19.3)
16142 (14.5)6019 (20.2)
5Occurred during earlier hospitalization but discovered during index hospitalization319 (25.0)65 (21.2)
27420 (24.6)5903 (19.8)