Table 1:
Treated Cohort (n = 524) | Untreated Cohorta |
||
---|---|---|---|
Asymptomatic(n = 371) | Symptomatic(n = 201) | ||
Age (yr) (mean) | 75.3 ± 10.5 | 76.9 ± 11.6 | 73.1 ± 12.0 |
Male (%) | 155 (29.6) | 68 (18.3) | 17 (8.5) |
Caucasian (%) | 481 (97.6) | 363 (98.1) | 199 (99.0) |
Charlson index (mean) | 3.1 ± 3.2 | 2.2 ± 2.6 | 1.6 ± 2.4 |
0 | 111 (21.2%) | 117 (31.5%) | 95 (47.3%) |
1–3 | 249 (47.5%) | 177 (47.7%) | 72 (35.8%) |
4+ | 164 (31.3%) | 77 (20.8%) | 34 (16.9%) |
Seventeen of the 589 untreated subjects had unknown back pain and were excluded from the table.