Table 1.
Characteristics of study population (n=770,095)
| Factors | Receipt of Industry Payments N (%) |
P value1 | |
|---|---|---|---|
| Yes N=292,763 (38.0) |
No N=477,332 (62.0) |
||
| Prescriber characteristics | |||
| Sex | <.0001 | ||
| Male | 216,798 (74.0) | 251,536 (52.7) | |
| Female | 75,965 (26.0) | 225,796 (47.3) | |
| Region | <.0001 | ||
| Northeast | 60,513 (20.7) | 108,699 (22.8) | |
| Midwest | 60,674 (20.7) | 107,089 (22.4) | |
| South | 116,745 (39.9) | 153,182 (32.1) | |
| West | 52,521 (17.9) | 105,483 (22.1) | |
| Non-US | 2,310 (0.8) | 2,879 (0.6) | |
| Prescriber practice factors | |||
| Specialty | <.0001 | ||
| Primary care | 99288 (33.9) | 131,968 (27.7) | |
| Medical specialty | 69,053 (23.6) | 33,662 (7.1) | |
| Surgical specialty | 45,631 (15.6) | 28,536 (6.0) | |
| Obstetrics/gynecology | 16,888 (5.8) | 11,640 (2.4) | |
| Hospital-based specialty | 15,460 (5.3) | 34,800 (7.3) | |
| Psychiatry | 15,786 (5.4) | 18,248 (3.8) | |
| Non-physician, unknown | 30,657 (10.5) | 218,478 (45.8) | |
| Annual number of distinct Medicare Part D beneficiaries served | <.0001 | ||
| 0-50 | 59,427 (20.3) | 190,733 (40.0) | |
| 51-100 | 46,474 (15.9) | 93,833 (16.7) | |
| 101-250 | 88,855 (30.4) | 127,402 (26.7) | |
| 251 and above | 98,007 (33.5) | 65,364 (13.7) | |
| Annual number of Medicare Part D claims | <.0001 | ||
| 0-100 | 35,213 (12.0) | 128,023 (26.8) | |
| 101-400 | 67,191 (23.0) | 157,545 (33.0) | |
| 401-2000 | 88,509 (30.2) | 118,972 (24.9) | |
| 2001 and above | 101,850 (34.8) | 72,792 (15.3) | |
1
Chi-square tests