Table 4.
Demographics and primary diagnosis of patients with SI joint disruption and/or degenerative sacroiliitisa
| Parameter | Overall (N=78,533) |
Patients with lumbar spinal fusion (N=434) |
Patients without lumbar spinal fusion (N=78,099) |
|---|---|---|---|
| Age in years, mean (SD) | 45.2 (12.6) | 49.5 (9.8) | 45.2 (12.6) |
| Age group, N (%) | |||
| <21 years | 5,817 (7.4) | 7 (1.6) | 5,810 (7.4) |
| 21–70 years | 72,716 (92.6) | 427 (98.4) | 72,289 (92.6) |
| Sex, n (%) | |||
| Male | 28,473 (36.3) | 135 (31.1) | 28,338 (36.3) |
| Female | 50,060 (63.7) | 299 (68.9) | 49,761 (63.7) |
| Primary diagnosis, N (%) | |||
| Sacroiliitisb | 20,175 (25.7) | 140 (32.3) | 20,035 (25.7) |
| Disorders of sacrumc | 19,601 (25.0) | 194 (44.7) | 19,407 (24.8) |
| Sacroiliac subluxationd | 26,625 (33.9) | 70 (16.1) | 26,555 (34.0) |
| Sprain/strain in sacroiliac regione | 9,846 (12.5) | 24 (5.5) | 9,822 (12.6) |
| Sprain/strain of sacrumf | 2,286 (2.9) | 6 (1.4) | 2,280 (2.9) |
| Health plan type, N (%) | |||
| Comprehensive | 7,520 (9.6) | 34 (7.8) | 7,486 (9.6) |
| Health maintenance organization | 10,806 (13.8) | 94 (21.7) | 10,712 (13.7) |
| PPO/POS | 58,215 (74.1) | 301 (69.4) | 57,914 (74.2) |
| CDHP/HDHP | 1,211 (1.5) | 2 (0.5) | 1,209 (1.5) |
| Other/unknown | 504 (0.6) | 2 (0.5) | 502 (0.6) |
Notes:
Race was not included in the commercial database. Degenerative sacroiliitis/SI joint disruption defined as: ICD-9-CM diagnosis codes 720.2, 724.6, 739.4, 846.9, or 847.3 in the primary diagnosis field;
sacroiliitis defined as: primary diagnosis code 720.2;
disorders of sacrum defined as: primary diagnosis code 724.6;
sacroiliac subluxation defined as: primary diagnosis code 739.4;
sprain/strain in sacroiliac region defined as: primary diagnosis code 846.9;
spain/strain of sacrum defined as: primary diagnosis code 847.3.
Abbreviations: CDHP, consumer-driven health plan; HDHP, high-deductible health plan; POS, point-of-service provider; PPO, preferred provider organization; SD, standard deviation; SI, sacroiliac.