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Table 1 Characteristics of the sample

From: Item distribution and inter-rater reliability of the German version of the quality of life in Alzheimer’s disease scale (QoL-AD) proxy for people with dementia living in nursing homes

Characteristics
People with dementia n = 73
Age in yearsa 87.38 (±7.71)
Femalea 38 (71.7%)
Length of stay in nursing home in monthsa 34.57 (±31.14)
Care dependency levelsa, b
• None 0 (0.0%)
• considerable (= I) 9 (17.0%)
• severe (= II) 25 (47.2%)
• most severe (≥ III) 19 (35.8%)
Dementia Screening Scale (DSS) 9.01 (±3.14)
• mild or moderate dementia (3–7) 28 (38.4%)
• severe dementia (8–14) 45 (61.6%)
Challenging behaviour (CMAI)a 34.87 (±10.48)
Caregivers (proxy-raters) n = 8 c
Age in years 34.75 (±13.76)
Female 8 (100.0%)
Registered nurses 5 (62.5%)
Working experience in years 9.38 (±5.63)
Working hours per week 38.75 (±3.54)
Experience in proxy-ratings
• no 6 (75.0%)
• yes, at least once 1 (12.5%)
• yes, regularly (≥ twice a month) 1 (12.5%)
  1. Data are reported as means (±SD) or absolute number (%)
  2. aThese results were based on n = 53 people with dementia, because these characteristics were missing for n = 20 people of the total sample
  3. bAs determined by expert raters of the medical service of the statutory long-term care insurance system
  4. cThe analyzed data includes answers of 21 raters. For 13 proxy-raters there are no data available