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Table 4 Simple linear regression for burden among caregivers of PWMI (FBIS)

From: Burden among caregivers of people with mental illness at Jimma University Medical Center, Southwest Ethiopia: a cross-sectional study

Variable R 2 B 95% CI p value
Age of caregiver 0.117 0.304 0.223 to 0.386 < 0.001
Duration of caregiver contact to patient within 24 h 0.351 1.954 1.695 to 2.214 < 0.001
Duration of care given by the caregiver 0.110 7.513 5.428 to 9.598 < 0.001
Caregiver’s sex
 Male 0.007 0   
 Female   1.931 − 0.283 to 4.145 0.087
Marital status of caregiver
 Married caregivera 0.020 0   
 Single   − 2.795 − 5.125 to (− 0.465) 0.019
 Others   5.589 − 1.904 to 13.082 0.143
Caregiver’s educational level
 (College or above)a 0.006 0   
 Not educated   0.982 − 2.007 to 3.971 0.519
 Primary education   2.321 − 0.668 to 5.310 0.128
 Secondary education   0.925 − 2.309 to 4.159 0.574
Residence of the caregiver
 Urban 0.005 0   
 Rural   − 1.488 − 3.576 to 0.601 0.162
Relationship to the patient
 Parenta 0.026 0   
 Spouse   0.554 − 3.044 to 4.153 0.762
 Siblings   − 2.338 − 5.643 to 0.867 0.150
 Children   − 2.299 − 4.780 to 0.182 0.069
 Other relatives   − 6.686 − 11.542 to (− 1.829) 0.007
Caregiver’s income in USD 0.220 − 0.106 − 0.126 to (− 0.087) < 0.001
Social support of caregivers 0.285 − 1.687 − 1.949 to (− 1.426) < 0.001
Perceived stigma of caregiver 0.397 0.990 0.871 to 1.109 < 0.001
Patient’s age 0.010 6.992 0.171 to 13.812 0.045
Duration of patient’s illness 0.102 7.121 5.055 to 9.188 < 0.001
Age of the patient at first onset of illness 0.001 − 0.034 − 0.127 to 0.058 0.470
Patient’s sex
 Male 0.001 0   
 Female   − 0.497 − 2.644 to 1.649 0.649
Patient’s educational level
 College or more educationa 0.008 0   
 Not educated   − 2.418 − 5.753 to 0.918 0.155
 Primary education   − 1.646 − 4.891 to 1.599 0.319
 Secondary education   − 0.183 − 3.645 to 3.279 0.917
Diagnosis of the patient
 Schizophreniaa 0.057 0   
 Other psychotic disorders   − 5.668 − 9.253 to (− 2.083) 0.002
 BADb   1.686 − 1.550 to 4.921 0.306
 MDDc   − 4.827 − 7.528 to (− 2.125) < 0.001
 Other disordersd   − 3.403 − 7.607 to (− 0.801) 0.112
Episodes of illness
 Single episodes of illnessa 0.051 0   
 2–4 episodes   5.659 3.349 to 7.970 < 0.001
 5 or more episodes   3.521 0.819 to 6.223 0.011
Patients history of psychiatric admission
 Yes 0.042 0   
 No   − 4.407 − 6.903 to (− 2.511) < 0.001
Patient’s history of substance use
 Yes 0.016 0   
 No   − 2.783 − 4.916 to (− 0.651) 0.011
Severity of patient’s illness (CGIS)
 Normal (asymptomatic)a 0.114 0   
 Borderline ill   2.941 − 2.653 to 8.535 0.302
 Mildly ill   5.442 2.159 to 8725 0.001
 Moderate ill   7.170 3.940 to 10.400 < 0.001
 Marked ill   12.078 7.764 to 16.391 < 0.001
 Severe ill   15.866 7.814 to 23.917 < 0.001
 Extreme ill   19.294 10.673 to 27.915 < 0.001
  1. aReference group
  2. bBipolar affective disorder
  3. cMajor depressive disorder
  4. dAnxiety disorders, post-traumatic stress disorders, neuro-cognitive disorders, etc.