Table 6. Odds ratio (OR) for incidence of one or more MSPrIs in year 1 and in years 1 and 2 combined by baseline risk factors – using logistic regression.
| Year 1 | Years 1 and 2 combined | ||||||
|---|---|---|---|---|---|---|---|
| Unadjusted | Adjusted | Unadjusted | Adjusted | ||||
| Variable | OR (95% CI) | P value | P value* | OR (95% CI) | P value | P value* | |
| Participant Characteristics | |||||||
| Female | 0.733 (0.320–1.677) | 0.46 | — | 0.365 (0.136–0.975) | 0.04 | — | |
| Race/ethnicity | |||||||
| Caucasian | Ref | Ref | |||||
| African American | 0.671 (0.284–1.586) | 0.36 | 0.28 | 1.017 (0.352–2.940) | 0.97 | 0.46 | |
| Hispanic | 0.533 (0.234–1.213) | 0.13 | 0.14 | 0.551 (0.201–1.511) | 0.25 | 0.13 | |
| Other | 0.408 (0.117–1.422) | 0.16 | 0.14 | 0.514 (0.112–2.359) | 0.39 | 0.23 | |
| Paralysis Level | |||||||
| Paraplegia | Ref | Ref | |||||
| Tetraplegia | 1.399 (0.749–2.614) | 0.29 | 0.85 | 1.047 (0.508–2.161) | 0.90 | 0.52 | |
| Complete SCI | 1.224 (0.667–2.248) | 0.51 | 0.66 | 1.208 (0.602–2.422) | 0.59 | 0.67 | |
| Risk Level II | 6.075 (3.361–10.980) | <0.001 | — | 4.239 (2.160–8.321) | <0.001 | — | |
| Education | |||||||
| < HS, GED | Ref | Ref | |||||
| High School | 1.310 (0.672–2.555) | 0.43 | 0.25 | 1.019 (0.466–2.225) | 0.96 | 0.37 | |
| Some College | 1.008 (0.500–2.030) | 0.98 | 0.80 | 1.048 (0.466–2.353) | 0.91 | 0.59 | |
| College Graduate | 0.737 (0.261–2.084) | 0.57 | 0.84 | 0.611 (0.186–2.005) | 0.42 | 0.91 | |
| Household Income | |||||||
| $0–999/month | Ref | Ref | |||||
| $1000–1999/month | 0.667 (0.315–1.413) | 0.29 | 0.35 | 0.40 (0.171–0.935) | 0.03 | 0.04 | |
| ≥ $2000/month | 1.433 (0.739–2.777) | 0.29 | 0.25 | 0.75 (0.339–1.660) | 0.48 | 0.65 | |
| Diabetes | 2.391 (1.186–4.821) | 0.01 | — | 2.056 (0.830–5.089) | 0.12 | — | |
| ≥ 7 Other comorbidities | 2.045 (1.167–3.582) | 0.01 | — | 2.122 (1.097–4.106) | 0.03 | — | |
| Age (per year) | 0.99 (0.97–1.01) | 0.35 | 0.09 | 0.99 (0.96–1.01) | 0.40 | 0.40 | |
| BMI (per 5 kg/m2) | 0.95 (0.76–1.20) | 0.69 | 0.17 | 0.96 (0.74–1.23) | 0.73 | 0.51 | |
| Duration of SCI (per yr.) | 0.99 (0.96–1.01) | 0.24 | 0.17 | 0.99 (0.96–1.02) | 0.49 | 0.97 | |
| Baseline Mediators** | |||||||
| Interpersonal support | 0.92 (0.70–1.20) | 0.52 | 0.94 | 0.78 (0.56–1.07) | 0.12 | 0.35 | |
| Self-efficacy | 1.04 (0.74–1.45) | 0.84 | 0.89 | 1.20 (0.86–1.67) | 0.28 | 0.18 | |
| General | 1.03 (0.74–1.44) | 0.85 | 0.88 | 1.18 (0.85–1.64) | 0.33 | 0.22 | |
| Pressure injury | 1.05 (0.76–1.47) | 0.76 | 0.90 | 1.19 (0.86–1.64) | 0.29 | 0.24 | |
| Preventive behaviors | 1.57 (1.08–2.27) | 0.02 | 0.09 | 1.52 (1.07–2.15) | 0.02 | 0.06 | |
| Baseline Covariates** | |||||||
| SF-36 | |||||||
| Physical function | 0.80 (0.57–1.11) | 0.18 | 0.40 | 0.88 (0.64–1.21) | 0.45 | 0.60 | |
| Role limitations - physical | 0.76 (0.54–1.06) | 0.11 | 0.16 | 0.95 (0.69–1.31) | 0.76 | 0.81 | |
| Role limitations - emotional | 0.94 (0.68–1.29) | 0.69 | 0.62 | 1.11 (0.81–1.52) | 0.52 | 0.63 | |
| Energy/fatigue | 1.00 (0.72–1.38) | 0.99 | 0.67 | 1.11 (0.81–1.52) | 0.52 | 0.76 | |
| Emotional well-being | 0.98 (0.71–1.35) | 0.91 | 0.62 | 1.24 (0.90–1.71) | 0.19 | 0.26 | |
| Social functioning | 0.89 (0.65–1.23) | 0.48 | 0.63 | 1.10 (0.80–1.51) | 0.57 | 0.56 | |
| Pain | 0.78 (0.56–1.07) | 0.13 | 0.05 | 0.76 (0.55–1.04) | 0.09 | 0.04 | |
| General health | 0.99 (0.72–1.37) | 0.97 | 0.60 | 1.05 (0.76–1.44) | 0.77 | 0.45 | |
| Life satisfaction | 0.80 (0.58–1.11) | 0.19 | 0.61 | 0.80 (0.59–1.10) | 0.17 | 0.56 | |
| PrI knowledge | 1.13 (0.82–1.57) | 0.45 | 0.30 | 0.87 (0.63–1.19) | 0.37 | 0.30 | |
| Depression | 1.04 (0.79–1.37) | 0.77 | 0.83 | 0.93 (0.68–1.26) | 0.63 | 0.72 | |
*Adjusted for sex, risk group, diabetes, and other comorbidities.
**Odds ratios and confidence intervals are per one standard deviation in baseline values for the specified variable.