Table 3.
Linear unadjusted and adjusted regression analyses * of the association between QUALID (dependent variable) and variables measuring demographic factors, health and physical performance.
| Independent Variables | Unadjusted Analysis | Adjusted Analysis * | Adjusted Analysis ** | |||
|---|---|---|---|---|---|---|
| Model 1 | Model 2 | Model 3 | ||||
| β | p | β | p | β | p | |
| Age in years | 0.08 | 0.30 | 0.06 | 0.49 | 0.03 | 0.69 |
| Gender (men = 1, women = 0) | −0.06 | 0.44 | −0.006 | 0.94 | −0.05 | 0.54 |
| Use of walking aid (yes = 1, no = 0) | 0.04 | 0.66 | ||||
| MMSE | −0.09 | 0.3 | ||||
| Clock drawing test | −0.05 | 0.56 | ||||
| Duration of stay in nursing home (months) | 0.08 | 0.35 | ||||
| Number of diagnoses | −0.02 | 0.85 | ||||
| Number of drugs | 0.06 | 0.48 | ||||
| Musculoskeletal diagnosis | 0.07 | 0.38 | ||||
| Neurological diagnosis | −0.06 | 0.42 | ||||
| Cardiovascular disorders | −0.02 | 0.77 | ||||
| Psychiatric diagnosis | 0.11 | 0.16 | ||||
| Berg Balance Scale (points) | −0.20 | 0.01 | −0.19 | 0.016 | ||
| 30-s sit-to-stand | −0.20 | 0.01 | −0.20 | 0.01 | ||
| Comfortable walking speed | −0.14 | 0.08 | ||||
| Maximum walking speed | −0.13 | 0.09 | ||||
| Barthel Index | −0.08 | 0.33 | ||||
β = Standardized coefficient; * Not including Berg’s Balance Scale because of the level of its correlation (Pearson correlationcoefficient = 0.71) with 30-s chair stand test; ** Not including the 30-s chair stand because of fits level of its correlation (Pearson correlationcoefficient = 0.71) with the Berg Balance Scale; p = level of significance.