Table 2 Health insurance characteristics

N

3,606

1,742

1,864

4,497

2,691

1,806

1,154

764

390

Type of payer (%)

NS

NS

NS

Commercial

3,321 (92.1)

1,592 (91.4)

1,729 (92.8)

3,632 (80.8)

2,149 (79.9)

1,483 (82.1)

971 (84.1)

638 (83.5)

333 (85.4)

Public

167 (4.6)

87 (5.0)

80 (4.3)

715 (15.9)

448 (16.7)

267 (14.8)

121 (10.5)

81 (10.6)

40 (10.3)

Self-insured

100 (2.8)

54 (3.1)

46 (2.5)

134 (3.0)

84 (3.1)

50 (2.8)

55 (4.8)

39 (5.1)

16 (4.1)

Unknown

18 (0.5)

9 (0.5)

9 (0.5)

16 (0.4)

10 (0.4)

6 (0.3)

7 (0.6)

6 (0.8)

1 (0.3)

Type of plan (%)

<0.0001

<0.0001

NS

HMO

813 (22.6)

434 (24.9)

379 (20.3)

1,071 (23.8)

734 (27.3)

337 (18.7)

272 (23.6)

182 (23.8)

90 (23.1)

Indemnity

320 (8.9)

136 (7.8)

184 (9.9)

854 (19.0)

499 (18.5)

355 (19.7)

170 (14.7)

112 (14.7)

58 (14.9)

PPO

1,742 (48.3)

792 (45.5)

950 (51.0)

1,982 (44.1)

1,114 (41.4)

868 (48.1)

551 (47.8)

360 (47.1)

191 (49.0)

POS

556 (15.4)

316 (18.1)

240 (12.9)

462 (10.3)

278 (10.3)

184 (10.2)

120 (10.4)

77 (10.1)

43 (11.0)

Other

175 (4.9)

64 (3.7)

111 (6.0)

128 (2.9)

66 (2.5)

62 (3.4)

41 (3.6)

33 (4.3)

8 (2.1)

Pharmacy benefit (%)

0.0008

<0.0001

NS

No

700 (19.4)

300 (17.2)

400 (21.5)

1,229 (27.3)

656 (24.4)

573 (31.7)

246 (21.3)

151 (19.8)

95 (24.4)

Yes

2,372 (65.8)

1,198 (68.8)

1,174 (63.0)

2,809 (62.5)

1,769 (65.7)

1,040 (57.6)

761 (65.9)

518 (67.8)

243 (62.3)

Unknown

534 (14.8)

244 (14.0)

290 (15.6)

459 (10.2)

266 (9.9)

193 (10.7)

147 (12.7)

95 (12.4)

52 (13.3)