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Table 1 Characteristics of informal caregivers and people with dementia

From: Perseverance time of informal caregivers for people with dementia: construct validity, responsiveness and predictive validity

  Study A (n = 198) Study B (n = 166)
Caregiver
 Female sex (%) 67 55
 Age, years, mean (SD) 66.6 (12.9) 49.5 (14.4)
 Resides with people with dementia, % 59 17
 Duration of informal caregiving, years   Median (IQR)
  0 7% 3 (1–5)
  1 27%
  2 20%
  3 18%
  4 14%
  5 or more 15%
 Informal care, h/week, median (IQR) 20 (8–50) 8 (5–18)
 Relationship with people with dementia, %
  Spouse or partner 55 7
  Child 37 54
  Other 8 40
 Perseverance time, %
  Less than 1 month 6 10
  More than 1 month, less than 6 months 15 11
  More than 6 months, less than 1 year 20 13
  More than 1 year, less than 2 years 20 13
  More than 2 years 40 54
 CarerQol-7D tariff, mean (SD) 70.2 (19.2) 75.2 (20.4)
 CarerQol-VAS, mean (SD) 6.4 (1.8) 7.0 (1.7)
 CSI, median (IQR) 8 (6–10) 5 (2–7)
 SRB, mean (SD) 6.0 (2.2) 4.8 (2.3)
 VAS health score, mean (SD) 7.3 (1.6) 7.3 (1.7)
People with dementia
 Female sex, % 53 73
 Age, years, mean (SD) 81.3 (6.6) 76.6 (17.0)
 Health VAS score, mean (SD) 5.8 (1.9) 5.4 (2.0)
  1. CarerQol-7D score ranges from 0 to 100, with higher scores indicating favorable situation; CarerQol-VAS score ranges from 0 to 10, with higher scores indicating favorable situation; CSI scores range from 0 to 18, with lower scores indicating favorable situation; SRB scores range from 0 to 10, with lower scores indicating favorable situation; and VAS health score ranges from 0 to 10, with higher scores indicating a more favorable situation. The category “Other” in relationship includes other family members, friends, neighbors, and acquaintances
  2. Abbreviations: CarerQol Care-related Quality of Life instrument, CSI Caregiver Strain Index, SRB Self-rated Burden scale, VAS Visual analogue scale