Table 1 Baseline characteristics of PMO study population, June 2005 – May 2010
Characteristics | Number of patients (%) |
|---|---|
N = 165,729 | |
Age (years) | |
55 to 64 | 130,344 (78.6) |
65 to 69 | 17,348 (10.5) |
70 to 74 | 7966 (4.8) |
≥ 75 | 10,071 (6.1) |
Race | |
Asian | 3898 (2.4) |
Caucasian | 123,788 (74.7) |
Hispanic | 10,131 (6.1) |
Black | 12,579 (7.6) |
Other | 1200 (0.7) |
Unknown | 14,077 (8.5) |
Geographic region | |
Northeast | 14,124 (8.5) |
Midwest | 35,746 (21.6) |
South | 98,519 (59.4) |
West | 16,965 (10.2) |
Unknown | 375 (0.2) |
Calendar year of cohort entry | |
2005 | 49,311 (29.8) |
2006 | 34,899 (21.1) |
2007 | 26,828 (16.2) |
2008 | 28,508 (17.2) |
2009 | 20,390 (12.3) |
2010 | 5793 (3.5) |
Usage of healthcare facilities | |
Patients with at least one physician office/outpatient visit | 154,648 (93.3) |
Patients with at least one emergency room visit | 28,381 (17.1) |
Patients with at least one hospitalization | 11,472 (6.9) |