Table 3.
Baseline Characteristics of Completers and Dropouts
| Completers (n=74) |
Dropouts (n=16) |
P | |
|---|---|---|---|
| Age, years (M±SEM) | 48.2±1.27 | 46.9±3.02 | .680 |
| BMI, kg/m2(M±SEM) | 26.8±0.47 | 25.8±0.96 | .333 |
| Gender (%) | |||
| Female | 74.3 | 87.5 | .259 |
| Male | 25.7 | 12.5 | |
| Ethnicity (%) | |||
| African-American | 2.7 | 0 | .499 |
| Asian-American | 5.4 | 0 | |
| Caucasian | 91.9 | 100 | |
| Education (%) | |||
| Some college or less | 24.7 | 37.5 | .295 |
| College graduate | 75.3 | 62.5 | |
| Annual household income (%) | |||
| <$35,000 | 17.8 | 20.0 | .430 |
| $35–50,000 | 24.7 | 13.3 | |
| $50–100,000 | 41.1 | 33.3 | |
| >$100,000 | 16.4 | 33.3 | |
| Taking meds for LBP (%) | 90.5 | 100 | .200 |
| Prior CAM usage (% yes) | 64.9 | 56.3 | .517 |
| LBP Diagnosis (% sacroiliac-related) | 40.5 | 56.3 | .250 |
| History of LBP | M±SEM | M±SEM | |
| Months of current LBP | 69.6±15.10 | 34.3±21.32 | .186 |
| Months since first LBP | 189.2±16.75 | 142.9±36.85 | .266 |
| Outcome Measures | |||
| ODI (0–100) | 23.6±1.03 | 26.6±2.71 | .307 |
| VAS (0–100 mm) | 41.0±2.00 | 44.1±4.30 | .521 |
| BDI-II (0–63) | 8.8±0.69 | 8.6±1.73 | .910 |
| Treatment Expectancy – yoga (0–10) | |||
| Pre-randomization | 7.9±0.17 | 8.2±0.35 | .397 |
| Post-randomization | 7.4±0.17 | 7.6±0.39 | .675 |
| Pre-post randomization change | −0.5±0.19 | −0.6±0.25 | .622 |
| Treatment Expectancy – SMC (0–10) | |||
| Pre-randomization | 4.9±0.21 | 3.9±0.46 | .065 |
| Post-randomization | 4.6±0.22 | 3.1±0.55 | .016* |
| Pre-post randomization change | −0.3±0.25 | −0.8±0.48 | .298 |
*
statistically significant at p < 0.05.
BMI, body mass index
M±SEM, mean ± standard error of the mean
LBP, low back pain; ODI, Oswestry Disability Index
VAS, visual analogue scale
BDI-II, Beck Depression Inventory – Second Edition
SMC, standard medical care