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Table 4 Demographic and clinical factors associated with having a low MCS or PCS component summary score

From: The impact of adverse events on health-related quality of life among patients receiving treatment for drug-resistant tuberculosis in Johannesburg, South Africa

 

Mental component summary score

Physical component summary score

N, % (n = 74)

Crude RR (95% CI)

Adjusted RR (95% CI)

N, % (n = 75)

Crude RR (95% CI)

Adjusted RR (95% CI)

Adverse event

 Adverse event not reported

31/91 (34.1%)

1.00

1.00

35/91 (38.5%)

1.00

1.00

 Adverse event reported

43/58 (74.1%)

2.18 (1.57–3.01)

2.24 (1.53–3.27)

40/58 (69.0%)

1.79 (1.31–2.45)

1.52 (1.07–2.18)

Sex

 Male

39/82 (47.6%)

1.00

1.00

41/82 (46.1%)

1.00

1.00

 Female

35/67 (52.2%)

1.10 (0.79–1.52)

1.23 (0.81–1.84)

34/67 (54.8%)

1.01 (0.74–1.40)

1.10 (0.71–1.68)

Age at treatment initiation (years)

 18–35

39/74 (52.7%)

1.00

1.00

37/74 (50.0%)

1.00

1.00

  > 35+

35/75 (46.7%)

0.89 (0.64–1.23)

0.91 (0.62–1.34)

38/75 (50.7%)

1.01 (0.74–1.40)

0.86 (0.56–1.31)

Education

 Secondary school and higher

67/135 (49.6%)

1.00

 

71/135 (52.6%)

1.00

 

 Primary school or less

7/14 (50.0%)

1.01 (0.58–1.75)

 

4/14 (28.6%)

0.54 (0.23–1.27)

 

Employment Status

 Unemployed

45/85 (52.9%)

1.00

 

45/85 (52.9%)

1.00

 

 Employed

28/63 (44.4%)

0.84 (0.60–1.18)

 

29/63 (44.4%)

0.87 (0.62–1.22)

 

Resistance Pattern

 RIF resistant by Xpert MTB/RIF

21/38 (55.2%)

1.00

1.00

21/38 (55.2%)

1.00

1.00

 RIF mono-resistant (INH sensitive)

30/67 (44.8%)

0.81 (0.55–1.20)

0.89 (0.55–1.45)

29/67 (43.3%)

0.78 (0.53–1.17)

0.88 (0.55–1.41)

 MDR-TB (RIF and INH resistant)

14/32 (43.8%)

0.79 (0.49–1.29)

1.09 (0.67–1.78)

16/32 (50.0%)

0.90 (0.58–1.42)

1.15 (0.66–1.99)

 Missing

9/12 (75.0%)

1.36 (0.88–2.09)

0.98 (0.59–1.64)

9/12 (75.0%)

1.36 (0.88–2.09)

1.26 (0.81–1.95)

HIV Status

 HIV negative

11/27 (40.7%)

1.00

 

13/27 (48.1%)

1.00

 

 HIV positive and on ART

45/94 (47.9%)

1.18 (0.71–1.94)

 

44/94 (46.8%)

0.97 (0.62–1.52)

 

 HIV positive not on ART

14/22 (63.6%)

1.56 (0.90–2.72)

 

15/22 (68.2%)

1.42 (0.87–2.30)

 

 Missing

4/6 (66.7%)

1.64 (0.79–3.39)

 

3/6 (50.0%)

1.04 (0.42–2.54)

 

Baseline CD4#

  ≤ 250 (n = 78)

39/78 (50.0%)

1.00

 

41/78 (52.6%)

1.00

1.00

  > 250 (n = 31)

16/31 (51.6%)

1.03 (0.69–1.55)

 

12/31 (38.7%)

0.74 (0.45–1.21)

0.82 (0.45–1.50)

 CD4 count unknown (n = 7)

4/7 (57.1%)

1.14 (0.58–2.56)

 

6/7 (85.7%)

1.63 (1.13–2.36)

1.04 (0.55–1.94)

Indications for DR-TB regimen

 Standard regimen (long- or short-course)

55/107 (51.4%)

1.14 (0.78–1.66)

1.49 (1.00–2.24)

54/107 (50.5%)

1.01 (0.71–1.44)

 

 Individualized regimen (injection free)

19/42 (45.2%)

1.0

1.0

21/42 (50.0%)

1.0

 

Duration of DR-TB treatment (months)

  ≤ 6 months

49/66 (74.2%)

2.46 (1.72–3.53)

2.27 (1.53–3.35)

44/66 (66.7%)

1.78 (1.29–2.48)

1.70 (1.11–2.61)

  > 6 months

25/83 (30.1%)

1.0

1.0

31/83 (37.3%)

1.0

1.0

Duration of ART (months)&

  ≤ 6 months (n = 14)

10/14 (71.4%)

1.91 (1.21–3.02)

1.46 (0.96–2.23)

7/14 (50.0%)

1.24 (0.68–2.27)

0.98 (0.51–1.89)

  > 6 months (n = 67)

25/67 (31.3%)

1.0

1.0

27/67 (40.3%)

1.0

1.0

  ART start date unknown (n = 13)

10/13 (76.9%)

2.06 (1.34–3.18)

1.58 (0.96–2.59)

10/13 (76.9%)

1.91 (1.26–2.90)

1.58 (0.96–2.60)

Anaemia

 None or mild (Hb ≥11.0 g/dL)

29/64 (45.3%)

1.00

 

31/64 (48.8%)

1.00

 

 Moderate (8–10.9 g/dL) or severe (< 8 g/dL)

14/26 (53.8%)

1.19 (0.76–1.86)

 

14/26 (53.8%)

1.11 (0.72–1.72)

 

 Missing

31/59 (52.5%)

1.16 (0.81–1.67)

 

30/59 (50.8%)

1.05 (0.73–1.50)

 

Weight at diagnosis (kg)

  < 50 kg

52/103 (50.5%)

1.00

 

51/103 (49.5%)

1.00

 

  ≥ 50 kg

17/37 (45.9%)

0.91 (0.61–1.36)

 

18/37 (48.6%)

0.98 (0.67–1.44)

 

 Missing

5/9 (55.6%)

1.10 (0.59–2.04)

 

6/9 (66.7%)

1.35 (0.81–2.23)

 

Referring Facility

 Outpatient

47/100 (47.0%)

1.00

 

48/100 (48.0%)

1.00

 

 Inpatient

27/49 (55.1%)

1.17 (0.84–1.63)

 

27/49 (55.1%)

1.15 (0.83–1.59)

 

Patient Category

 New

47/90 (52.2%)

1.00

 

47/90 (52.2%)

1.00

 

 Previously treated

13/36 (36.1%)

0.69 (0.43–1.12)

 

13/36 (36.1%)

0.69 (0.43–1.12)

 

 Missing

14/23 (60.9%)

1.17 (0.79–1.71)

 

15/23 (65.2%)

1.25 (0.87–1.79)

 

TB Type

 PTB and EPTB or EPTB only

11/24 (45.8%)

1.00

 

12/24 (45.8%)

1.00

 

 PTB and not reported

63/125 (50.4%)

1.10 (0.69–1.76)

 

63/125 (50.4%)

1.01 (0.65–1.56)

 

Smear Microscopy

 Negative

49/99 (49.5%)

1.00

 

48/99 (48.5%)

1.00

 

 Positive

10/26 (38.5%)

0.78 (0.46–1.32)

 

12/26 (46.2%)

0.95 (0.60–1.51)

 

 Missing

15/24 (62.5%)

1.26 (0.87–1.83)

 

15/24 (62.5%)

1.29 (0.89–1.87)

 
  1. PTB pulmonary tuberculosis, EPTB extra pulmonary tuberculosis, DR-TB drug-resistant TB, MDR-TB multi-drug resistant TB, RR-TB rifampicin-resistant tuberculosis, RIF rifampicin, INH isoniazid, Hb hemoglobin
  2. # Among patients who are HIV positive (n = 116)
  3. & Among patients who are HIV positive and on ART (n = 94)
  4. a Standard long-course = 6 months of injectable kanamycin and 18–24 months of oral moxifloxacin, ethionamide, terizidone, and pyrazinamide
  5. b Individualized long-course = bedaquiline was introduced as a substitute for kanamycin in the standard long-course regimen (either at start of DR-TB or switched during treatment due to an incident adverse event)
  6. c Standard short-course = 4 to 6-month intensive phase of kanamycin, moxifloxacin, ethionamide, clofazimine, pyrazinamide and high-dose isoniazid followed by 5 months of moxifloxacin, clofazimine, pyrazinamide and ethambutol
  7. d Individualized short-course = bedaquiline was introduced as a substitute for kanamycin in the standard short-course regimen (either at start of DR-TB or switched during treatment due to an incident adverse event)