| Exploratory sample (n = 1969) | Confirmatory sample (n = 1914) | ||
---|---|---|---|---|
Gender | Â | Â | Â | Â |
   Male | 60.9% | (1199) | 60.8% | (1164) |
   Female | 39.1% | (770) | 39.2% | (750) |
Age (years) | Â | Â | Â | Â |
   Mean (Range) | 63.9 | (18-94) | 64.6 | (20-96) |
   ≤ 55 years | 26.4% | (519) | 24.1% | (462) |
   56 - 75 years | 48.1% | (947) | 48.9% | (935) |
   ≥ 76 years | 25.5% | (503) | 27.0% | (517) |
Years on dialysis | Â | Â | Â | Â |
   Mean (Range) | 4.6 | (0-33) | 4.8 | (0-38) |
Karnofsky performance index* | Â | Â | Â | Â |
   Mean (Range) | 74 | (10-100) | 74 | (10-100) |
Decision-making preference | Â | Â | Â | Â |
   Active role | 22.4% | (442) | 22.2% | (424) |
   Collaborative role | 31.3% | (616) | 30.8% | (589) |
   Passive role | 46.3% | (911) | 47.1% | (901) |
Educational level | Â | Â | Â | Â |
   Low | 65.9% | (1297) | 68.6% | (1313) |
   High | 34.1% | (672) | 31.4% | (601) |
Information-seeking preference | Â | Â | Â | Â |
   Low | 38.9% | (765) | 38.9% | (744) |
   High | 61.1% | (1204) | 61.1% | (1170) |
Trust in physician | Â | Â | Â | Â |
   Below average | 34.1% | (672) | 35.4% | (677) |
   Above average | 65.9% | (1297) | 64.6% | (1237) |
Physicians' PDM style | Â | Â | Â | Â |
   Negative | 38.1% | (750) | 39.0% | (747) |
   Positive | 61.9% | (1219) | 61.0% | (1167) |