Table 1.
Predictors of brand name proton pump inhibitor choice among patients prescribed a proton pump inhibitor, 2006–2010.
| Total unweighted sample (N = 9,677) |
Weighted encounters with a brand name PPI, millions (%)† | P value | Adjusted incidence rate ratio (95% CI) of brand name PPI | |
|---|---|---|---|---|
| Year | ||||
| 2006 | 1753 | 43.1 (76.0) | <0.0001 | Ref |
| 2007 | 2011 | 46.2 (74.3) | 1.0 (0.9-1.0) | |
| 2008 | 1665 | 31.8 (51.0) | 0.7 (0.6-0.7) | |
| 2009 | 2153 | 33.3 (42.0) | 0.6 (0.5-0.6) | |
| 2010 | 2095 | 21.7 (31.6) | 0.4 (0.4-0.5) | |
| Age category, y | ||||
| 18–24 yrs | 144 | 2.2 (46.1) | 0.004 | Ref |
| 25–44 yrs | 1383 | 26.9 (57.9) | 1.2 (0.9–1.5) | |
| 45–64 yrs | 3766 | 70.0 (55.4) | 1.2 (0.9–1.5) | |
| ≥65 yrs | 4384 | 76.9 (50.7) | 1.1 (0.9–1.4) | |
| Sex | ||||
| Female | 5857 | 111.4 (55.1) | 0.004 | Ref |
| Male | 3820 | 64.6 (50.9) | 0.9 (0.9-1.0) | |
| Race/ethnicity | ||||
| White | 7478 | 133.3 (51.4) | 0.001 | Ref |
| Black | 862 | 17.6 (59.8) | 1.1 (1.0–1.2) | |
| Hispanic/Latino | 972 | 12.4 (38.8) | 1.1 (1.0–1.2) | |
| Other | 365 | 5.6 (51.4) | 1.0 (0.8–1.1) | |
| Median Income | ||||
| Q1 (<32.8 K) | 2091 | 37.5 (57.0) | 0.2 | |
| Q2 (32.8–40.6) | 2340 | 42.7 (53.2) | ||
| Q3 (>40.6–52.4) | 2375 | 42.9 (52.7) | ||
| Q4 (>52.4) | 2339 | 42.6 (51.5) | ||
| Region | ||||
| South | 3318 | 80.0 (60.0) | <0.0001 | Ref |
| Northeast | 1916 | 34.7 (53.8) | 0.9 (0.8–1.0) | |
| Midwest | 2515 | 34.6 (45.8) | 0.8 (0.7–0.9) | |
| West | 1928 | 26.8 (47.9) | 0.8 (0.8-0.9) | |
| Patient insurance type | ||||
| Private | 3920 | 77.3 (54.3) | 0.1 | |
| Medicare | 4009 | 71.1 (51.4) | ||
| Medicaid | 839 | 13.7 (58.3) | ||
| Other | 615 | 9.0 (56.8) | ||
| Unknown | 294 | 4.9 (53.2) | ||
| Total number of chronic conditions | ||||
| 0 | 1917 | 36.6 (56.5) | 0.0001 | Ref |
| 1-2 | 4610 | 86.9 (55.5) | 1.0 (1.0-1.1) | |
| ≥3 | 3150 | 52.6 (48.8) | 0.9 (0.9-1.0) | |
| Provider type | ||||
| Primary care | 4426 | 95.0 (50.9) | 0.002 | Ref |
| Medical spec. | 3436 | 59.0 (57.1) | 1.1 (1.0–1.2) | |
| Surgical spec. | 1815 | 22.1 (56.0) | 1.1 (1.0-1.1) | |
| Practice ownership | ||||
| HMO | 217 | 0.7 (13.8) | <0.0001 | Ref |
| Physician-owned | 7174 | 148.9 (55.6) | 3.6 (2.0–6.4) | |
| Community health center | 982 | 4.0 (52.5) | 3.7 (2.0–6.7) | |
| Academic medical center | 197 | 3.9 (58.9) | 4.0 (2.2–7.3) | |
| Other | 1093 | 17.8 (43.4) | 3.2 (1.8–5.6) | |
| Metropolitan status of practice | ||||
| MSA | 8342 | 151.3 (53.7) | 0.6 | |
| Non-MSA | 1335 | 24.7 (52.2) |
†As a percentage of the total number of patients prescribed a PPI, adjusted for sample weights.