Table 1.

All-Cause Mortality by Cross-Tabulation of Retention Measures

Retention per IOM Measurea	Retained per Missed-Visits Measure (0 No-Shows)	Not Retained per Missed-Visits Measure (≥1 No-Show)
Retained	All-cause mortality for patients retained by both measures	All-cause mortality for patients retained by IOM measure only
Not retained	All-cause mortality for patients retained by missed-visits measure only	All-cause mortality for patients not retained by either measure

Abbreviation: IOM, Institute of Medicine.

^aThe IOM measure defines retention as having ≥2 kept (attended) primary care visits separated by ≥90 days during a 12-month period.