Table 1

 Characteristics of hospital admissions for, and participants with, acute myocardial infarction according to electronic records

CharacteristicHospital admissionsParticipants*
β-blocker dispensed on hospital day 0 or 1β-blocker dispensed on hospital day 0 or 1
No(N = 173)Yes(N = 218)No(N = 158)Yes(N = 187)p value
COPD, chronic obstructive pulmonary disease.
*Data shown reflect participants’ first hospital admission for acute myocardial infarction during the study period.
Mean age (years)757575740.34
Female (%)575758560.71
Race (% African-American)504948490.83
Died in hospital (%)27112911<0.0001
Chronic heart failure (N (%))106 (61)129 (59)93 (59)101 (54)0.32
Asthma or COPD (%)352335220.008
Eligible for β-blocker on admission, based on Medicare criteria (N (%))19 (11)49 (22)19 (12)49 (26)0.001
β-blocker ordered any time during hospitalization(N (%))41 (24)218 (100)22100<0.0001
β-blocker ordered at discharge (N (%))23 (13)153 (70)1170<0.0001