Table A4.
Baseline characteristics analyzed vs. lost to follow-up (at day 0).
| Analyzed (n = 86) |
Loss to Follow-Up (n = 40) |
|
|---|---|---|
| Age (in years), median [IQR] | 40 [32, 52] | 41 [33, 48] |
| Female sex, n (%) | 35 (40.7) | 11 (27.5) |
| BMI (in kg/m2), median [IQR] | 25 [23, 29] | 27 [23, 30] |
| Physical Activity Vital Sign *, median [IQR] | 150 [5.5, 300] | 270 [1.5, 860] |
| Pain medication intake before consultation, n (%) | 60 (69.8) | 31 (77.5) |
| ESI level, n (%) | ||
| 1 | 0 | 0 |
| 2 | 11 (12.8) | 7 (17.5) |
| 3 | 28 (32.6) | 22 (55) |
| 4 | 45 (52.3) | 10 (25) |
| 5 | 1 (1.2) | 0 (0) |
| Pain on NRS (0 to 10), median [IQR] | 7.5 [5, 8] | 8 [6.8, 10] |
| STarT-Back Screening tool, median [IQR] | 5 [4, 6] | 5 [4, 7] |
| STarT-Back tool risk categories, n (%) | ||
| Low risk | 16 (18.6) | 9 (22.5) |
| Intermediate risk | 54 (62.8) | 19 (47.5) |
| High risk | 16 (18.6) | 12 (30) |
| Oswestry Disability Index, median [IQR] | 24 [16, 33] | 29 [19, 33] |
| Oswestry Disability Index categories, n (%) | ||
| No Disability (ODI 0–4) | 2 (2.3) | 1 (2.5) |
| Mild disability (ODI 5–14) | 17 (19.8) | 7 (17.5) |
| Moderate disability (ODI 15–24) | 26 (30.2) | 6 (15) |
| Severe disability (ODI 25–34) | 24 (27.9) | 19 (47.5) |
| Completely disabled (ODI 35–50) | 17 (19.8) | 7 (17.5) |
Data are reported as median [interquartile range] or n (%). * Defined as total minutes per week of physical activity. Abbreviations: BMI = body mass index, ESI = emergency severity index, NRS = numeric rating scale, ODI = Oswestry Disability Index.