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Table 2 Sample characteristics across twenty-eight studies included in this review

From: A systematic review comparing caregiver burden and psychological functioning in caregivers of individuals with schizophrenia spectrum disorders and bipolar disorders

Study ID and Authors

n (%) of Caregivers (SSD, BD & Other Groups)

Age M(SD)

n (%) female

SSD n(%)

BD n(%)

Other n(%)

1. Blanthorn-Hazell et al. [52]

138(46.0%)

159(54.0%)

N/A

Total N: 44.8(13.1)

Total N = 214(72.0%)

2. Chadda et al. [53]

100(50.0%)

100(50.0%)

N/A

75.0% between 25 and 50 years of age

SSD = 51(51.0%)

BD = 42(42.0%)

3. Chakrabarti and Gill [54]

20(34.5%)

38(65.5%)

N/A

SSD = 48.7(10.7)

BD = 39.2(9.3)

SSD = 12(60.0%)

BD = 17(45.0%)

Total N = 29(50.0%)

4. Chakrabarti et al. [55]

20(50.0%)

20(50.0%)

N/A

SSD = 44.7(13.1)

BD = 41.7(12.9)

Total N = 43.2(13.1)

SSD = 8(40.0%)

BD = 9(45.0%)

Total N = 17(42.5%)

5. Chang et al. [56]

215(46.8%)

85(18.5%)

MDD: 159 (34.6%)

SSD = 55.0(13.5)

BD = 51.4(12.6)

MDD = 52.1(13.8)

SSD = 118(55.0%)

BD = 43(51.0%)

MDD = 74(47.0%)

Total N = 235(51.2%)

6. Chien et al. [57]

168(64.1%)

12(4.6%)

Dep: 48 (18.3%)

Total N = 42.6(10.8)

Total N = 158(60.3%)

7. Fekih-Romdhane et al. [58]

20(38.5%)

25(48.1%)

SCZAF: 7 (13.5%)

Total N = 48.4(13.1)

Total N = 41(78.8%)

8. Grover et al. [59]

70(50.0%)

70(50.0%)

N/A

SSD = 49.9(11.8)

BD = 42.6(13.8)

SSD = 21(33.3%)

BD = 40(57.2%)

Total N = 61(43.6%)

9. Grover et al. [60]

65(53.3%)

57(46.7%)

N/A

Total N = 47.1(13.7)

Total N = 47(38.5%)

10. Grover et al. [61]

50(50.0%)

50(50.0%)

N/A

SSD = 50.3(14.9)

BD = 45.0(13.2)

SSD = 15(30.0%)

BD = 26(52.0%)

Total N = 41(41.0%)

11. Grover et al. [62]

707(50.4%)

344(24.5%)

Dep: 352 (25.1%)

Total N = 44.6(12.5)

Total N = 620(44.2%)

12. Ak et al. [63]

40(50.0%)

40(50.0%)

N/A

Not reported

SSD = 30(75.0%)

BD = 25(62.5%)

Total N = 55(68.8%)

13. Nehra et al. [64]

50(50.0%)

50(50.0%)

N/A

SSD = 43.50(9.8)

BD = 40.1(11.4)

SSD = 23(46.0%)

BD = 23(46.0%)

Total N = 44(44.0%)

14. Ramírez et al. [65]

Not specified

Not specified

N/A

Not reported

Not reported

15. Rodrigo et al. [66]

65(81.3%)

15(18.7%)

N/A

Total N = 57.7(13.3)

Total N = 44(55.0%)

16. Roychaudhuri et al. [67]

30(55.5%)

24(44.4%)

N/A

Reported as n(%):

<  35 years = 24 (44.4%)

>  35 years = 30 (55.6%)

Total N = 20(37.0%)

17. Sharma et al. [68]

50(50.0%)

50(50.0%)

N/A

Total N = 43(12.0)

SSD = 23(46.0%)

BD = 18(36.0%)

Total N = 41(41.0%)

18. Singh and Prajapati [69]

40(50.0%)

40(50.0%)

N/A

SSD Carer females = 58.3(9.5)

BD Carer females = 0.0(16.7)

SSD = 30(75.0%)

BD = 20(50.0%)

Total N = 50(62.5%)

19. Vasudeva et al. [70]

52(50.5%)

51(49.5%)

N/A

SSD = 48.3(11.7)

BD = 47.4(12.0)

SSD = 20(38.5%)

BD = 23(45.1%)

Total N = 43(41.8%)

20. Webb et al. [71]

59(70.2%)

25(29.8%)

N/A

Total N = 56.0(13.6)

Total N = 66(78.0%)

21. Zendjidjian et al. [72]

246(51.5%)

115(24%)

Dep: 117(24.5%)

BD & MDD Total = 52.2(15.5)

Total N = 135(58.2%)

22. Zhou et al. [73]

243(54.9%)

200(45.2%)

N/A

SSD = 47.7(13.7)

BD = 44.4(13.6)

SSD = 107(44.0%)

BD = 102(51.0%)

Total N = 209(47.2%)

23. Abdeta and Desalegn [74]

80(37.2%)

60(27.9%)

Dep: 50(23.3%)

Anx: 25(11.6%)

Total N = 35(1.62)

Total N = 120(55.8%)

24. Cohen et al. [75]

63(50.4%)

62(49.6%)

N/A

SSD = 51.28(12.65)

BD = 40.55(15.17)

SSD = 52(84.1%)

BD = 43(69.4%)

25. Ukpong and Ibigbami [76]

100(50%)

100(50%)

N/A

SSD = 56.13(12.99)

BD = 43.03(13.06)

SSD = 63(63%)

BD = 52(52%)

26. Udoh et al. [77]

84(20.2%)

46(11.1%)

Dep: 104(25.1%)

SUD: 92(22.2%)

Others: 89(21.4%)

15–29 years = 181 (43.6%)

30–44 years = 154 (37.1%)

45–59 years = 63(15.2%)

Above 60 years = 17(4.1%)

Total female = 236(56.9%)

27. Asl et al. [78]

150(33.33%)

150(33.33%)

ASD: 150(33.33%)

SSD = 42.22(1.28)

BD = 48.41(1.37)

SSD = 81(54%)

BD = 87(58%)

28. Khatoon et al. [79]

30(50.0%)

30(50.0%)

N/A

20–30 years = 16(26.6%)

30–40 years = 34(56.6%)

40–50 years = 10(16.6%)

Not reported

  1. SSD Schizophrenia Spectrum Disorders, BD Bipolar Disorder, SCZAF Schizoaffective Disorder, Dep Depression, Anx Anxiety, SUD Substance Use Disorders, ASD Autism Spectrum Disorder, M Mean, SD Standard Deviation, N/n Number of participants