Table 1

 Harms and risks identified in incident reports*

Harm or risk variablen (%)
*Weighted to reflect incident reports of all patients discharged from the two hospitals.
†Transcribed from incident reports forms, which did not define the categories.
‡Rated by study physicians. Category definitions: “medical risks reaching patients” involved actual or potential risks of physical harm that were not intercepted before reaching the patient; “medical risks not reaching patients” involved actual or potential risks of physical harm that were intercepted before reaching the patient; and “social risks” involved no actual or potential risks of physical harm.
Reporters’ harm/injury ratings†
    None806 (20.8)
    Minor to moderate394 (10.2)
    Severe74 (1.9)
    Death109 (2.8)
    Unknown638 (16.5)
    Did not rate harm or injury1855 (47.9)
Physician reviewers’ risk-of-harm ratings‡
    Medical risks reaching patients3603 (93.0)
    Medical risks not reaching patients170 (4.4)
    Social risks103 (2.6)