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Table 2 Factor analysis, discriptive statistics and internal consistency.

From: Validation of the Burden Index of Caregivers (BIC), a multidimensional short care burden scale from Japan

  Factor loading
  Factor 1 Factor 2 Factor 3 Factor 4 Factor 5 Communality
Time-dependent Burden (0–8: Mean = 4.6, SD = 2.2, alpha = 0.84)       
1. I cannot freely leave the house because of caregiving 0.93 -0.15 0.10 0.07 -0.03 0.89
2. I do not have enough time for myself because of caregiving 0.83 0.19 -0.07 0.01 0.04 0.86
Emotional Burden (0–8: Mean = 2.7, SD = 2.1, alpha = 0.89)       
3. I want to delegate the care to someone else -0.06 0.91 0.06 0.07 -0.03 0.90
4. I am completely distressed by caregiving 0.07 0.77 0.16 0.05 0.01 0.88
Spiritual Burden (0–8: Mean = 2.8, SD = 2.1, alpha = 0.88)       
5. I am experiencing hardship because caregiving does not give me a sense of satisfaction 0.11 0.04 0.90 -0.01 -0.03 0.91
6. Caregiving is hard because I cannot find the meaning of nursing -0.06 0.19 0.82 0.00 0.07 0.88
Physical Burden (0–8: Mean = 3.1, SD = 2.3, alpha = 0.86)       
7. My body aches when nursing 0.01 0.05 -0.02 0.92 0.00 0.88
8. I have ruined my health because of nursing 0.10 0.07 0.01 0.82 0.01 0.85
Service-related Burden (0–8: Mean = 1.8, SD = 1.8, alpha = 0.68)       
9. It is a burden that public nursing care service personnel enter our house 0.09 0.22 -0.12 -0.11 0.86 0.80
10. I have a hard time because patients resent receiving public nursing care service -0.08 -0.20 0.15 0.13 0.85 0.78
11. Total Care Burden (0–4: Mean = 1.9, SD = 1.2) - - - - - -
BIC total (0–44: Mean = 16.8, SD = 8.9, alpha = 0.91) - - - - - -
Total contribution of factors       0.86
  1. Figures indicate standardized regression coefficient
  2. Alpha indicate Cronbach's alpha coefficient
  3. BIC: Burden Index of Caregivers