Table 2.
Patient-reported measures overall and by healthcare system site
|
Baseline symptoms and outcomes |
Combined |
N. CA |
Detroit |
Boston |
|---|---|---|---|---|
| N = 5239* | N = 3164 | N = 967 | N = 1108 | |
|
RMDQ (0–24), mean (SD) |
9.5 ± 6.4 |
9.7 ± 6.0 |
12.8 ± 5.9 |
6.4 ± 6.4 |
|
Back pain duration, N (%) |
|
|
|
|
|
< 1 month |
1749 (33%) |
1215 (38%) |
230 (24%) |
304 (27%) |
|
1 - 3 months |
1015 (19%) |
715 (23%) |
137 (14%) |
163 (15%) |
|
3 - 6 months |
344 (7%) |
243 (8%) |
46 (5%) |
55 (5%) |
|
6 - 12 months |
313 (6%) |
165 (5%) |
96 (10%) |
52 (5%) |
|
1 - 5 years |
776 (15%) |
399 (13%) |
197 (20%) |
180 (16%) |
|
> 5 years |
1037 (20%) |
426 (13%) |
261 (27%) |
350 (32%) |
|
Back pain intensity (0–10), mean (SD) |
5.0 ± 2.8 |
4.9 ± 2.7 |
6.2 ± 2.8 |
4.5 ± 2.7 |
|
Leg pain intensity (0–10), mean (SD) |
3.4 ± 3.3 |
3.5 ± 3.2 |
4.2 ± 3.6 |
2.6 ± 3.1 |
|
BPI Interference (0–10), mean (SD) |
3.3 ± 2.5 |
3.4 ± 2.5 |
3.8 ± 2.6 |
2.5 ± 2.3 |
|
PHQ-4 (0–12), mean (SD) |
1.6 ± 2.5 |
1.9 ± 2.5 |
1.8 ± 2.8 |
0.4 ± 1.6 |
|
EQ-5D index (-0.1-1), mean (SD) |
0.76 ± 0.17 |
0.76 ± 0.17 |
0.69 ± 0.20 |
0.81 ± 0.16 |
|
EQ5D VAS (0–100), mean (SD) |
74.3 ± 18.4 |
73.6 ± 18.9 |
74.0 ± 18.4 |
76.6 ± 16.9 |
|
Falls in past 3 weeks, N (%) |
|
|
|
|
|
Patients with one or more fall |
385 (7%) |
288 (9%) |
81 (8%) |
16 (1%) |
|
How many of these falls caused one or more injury**? |
179 (46%) |
121 (42%) |
51 (63%) |
7 (44%) |
| Back Pain Recovery Expectations (0–10), mean (SD) | 5.5 ± 3.7 | 5.7 ± 3.6 | 4.9 ± 3.7 | 5.1 ± 4.0 |
• *Sample sizes vary slightly for items due to slight variation in response rates with overall missing items being less than 0.3%. Complete data were available for RMDQ, back pain intensity, and BPI interference.
• **The number and percent of patients in whom a fall caused at least one injury where injury was defined as limiting regular activities for at least a day or requiring a visit to a doctor.