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Table 2 Characteristics of proxy raters

From: Inter-rater agreement of the Quality of Life-Alzheimer’s Disease (QoL-AD) self-rating and proxy rating scale: secondary analysis of RightTimePlaceCare data

ILTC: Professional carers (n = 476)
 Age/ years, mean (SD) 41.9 (11.8)
 Weekly hours of work, mean (SD) 35.7 (5.6)
 Professional education, n (%)
  Nursing aid 48 (10.7%)
  Certified nursing assistant 250 (55.9%)
  Registered nurse 149 (33.3%)
HC: Informal carers (n = 854)
 Age/ years, mean (SD) 64.8 (13.5)
 Gender, n (%)
  Female 590 (69.2%)
  Male 262 (30.8%)
 Marital status, n (%)
  Married/cohabitant 660 (77.3%)
  Widowed 42 (4.9%)
  Divorced 85 (10.0%)
  Never married 67 (7.8%)
 Relationship to person with dementia, n (%)
  Husband 142 (16.6%)
  Wife 208 (24.4%)
  Child 385 (45.1%)
  Friend 12 (1.4%)
  Other 106 (12.4%)
 ZBI, mean (SD) 31.7 (15.6)
 CRA/ Lack of family support (subscale), mean (SD) 12.1 (4.7)
 CRA/ Impact on health (subscale), mean (SD) 9.9 (3.9)
 EQ-5D-3 L, mean (SD) 0.8 (0.3)
 EQ-5D VAS, mean (SD) 68.7 (18.6)
 GHQ-12, mean (SD) 12.8 (5.7)
 NPI-Q-D, mean (SD) 10.6 (9.0)
  1. For some variables, data are not available for all participants (percentages are relative frequencies of the valid values)
  2. Value ranges of measures: see Additional file 1