Skip to main content

Table 2 Cox-regression model for survival in Eastern Europe, crude and adjusted hazard ratios (24 months follow-up)

From: Delayed diagnosis of tuberculosis in persons living with HIV in Eastern Europe: associated factors and effect on mortality—a multicentre prospective cohort study

 

Total (n = 740)

Crude HR (95% CI)

p-value

Adjusted HR (95% CI)a

p-value

Delayed diagnosis

≥ 1 month (n = 480)

1.36 (1.04–1.77)

0.023

1.27 (0.95–1.70)

0.103

Gender

Male (n = 563)

1.34 (1.02–1.76)

0.032

1.38 (1.04–1.83)

0.026

Age

Age 18–49 (n = 694)

Ref

Ref

  
 

Age ≥ 50 (n = 46)

0.92 (0.55–1.52)

0.741

  

Exposure group (HIV)

MSM (n = 10)

0.49 (0.12–1.95)

0.309

  
 

IDU (n = 422)

1.19 (0.93–1.52)

0.173

  
 

Heterosexual (n = 183)

0.84 (0.63–1.13)

0.255

  

Known HIV positive

At baseline (n = 668)

1.55 (0.96–2.50)

0.074

1.43 (0.84–2.42)

0.185

Treatment history (HIV)

Naïve at TB diagnosisc (n = 558)

1.04 (0.79–1.38)

0.766

  

ART at baselinec (n = 132)

0.96 (0.70–1.31)

0.795

  
 

Cotrimoxazole at baseline (n = 273)

1.22 (0.96–1.56)

0.110

  

CD4-cell count/mm3°

0–199/mm3 (n = 440)

2.17 (1.53–3.09)

0.001

1.84 (1.27–2.68)

0.001

≥ 200/mm3 (n = 185)

Ref

Ref

Ref

Ref

Missing CD4 (n = 115)

2.17 (1.41–3.33)

0.001

2.32 (1.47–3.66)

0.001

Prior AIDS

Yes (n = 177)

1.87 (1.45–2.41)

0.001

1.69 (1.27–2.24)

0.001

Previous TB

Yes (n = 99)

0.97 (0.68–1.39)

0.880

  

TB risk factor

Alcohol abuse (n = 186)

1.32 (1.01–1.73)

0.041

1.24 (0.92–1.68)

0.158

 

Recent TB in family (n = 53)

0.84 (0.50–1.42)

0.524

  
 

Prison within the last 2 years (n = 143)

1.11 (0.82–1.51)

0.493

  

Clinical presentation of TB

Pulmonary (n = 239)

Ref

Ref

Ref

Ref

 

Extrapulmonary (n = 54)

0.98 (0.51–1.88)

0.957

0.86 (0.44–1.68)

0.657

 

Disseminated (n = 447)

2.31 (1.71–3.11)

0.001

1.93 (1.38–2.69)

0.001

TB symptoms at diagnosis

Cough (n = 501)

0.95 (0.74–1.23)

0.708

  
 

Fever (n = 636)

1.59 (1.07–2.37)

0.022

1.41 (0.91–2.19)

0.124

 

Weight loss (n = 445)

1.70 (1.31–2.21)

0.001

1.41 (1.05–1.88)

0.022

Number of symptoms§

None (n = 20)

Ref

Ref

  
 

One symptom (n = 133)

0.89 (0.38–2.11)

0.793

  
 

Two symptoms (n = 312)

1.12 (0.49–2.56)

0.783

  
 

Three symptoms (n = 275)

1.58 (0.69–3.58)

0.277

  

Screening chest X-ray in pastd

Yes (n = 338)

1.30 (1.02–1.66)

0.034

1.27 (0.93–1.74)

0.133

Rifampicin resistance

Yes (n = 95)

1.53 (1.12–2.10)

0.007

Omittedb

 

MDR-TB

Yes (n = 88)

2.61 (1.68–4.05)

0.001

2.06 (1.06–4.01)

0.033

 

No (n = 148)

Ref

Ref

Ref

 
 

Missing (n = 504)

1.84 (1.28–2.64)

0.001

1.32 (0.68–2.57)

0.407

Diagnosis

Definitive (n = 333)

Ref

Ref

Ref

Ref

 

Probable (n = 76)

1.43 (0.97–2.11)

0.074

0.99 (0.61–1.59)

0.955

 

Presumptive (n = 331)

1.03 (0.80–1.34)

0.795

0.95 (0.67–1.35)

0.764

Hepatis B

HBsAg positive (n = 44)d

0.95 (0.56–1.60)

0.843

  

Hepatitis C

Anti-HCV positive (n = 405)d

1.20 (0.94–1.53)

0.145

  

Drug-susceptibility testing

At baseline (n = 236)

0.84 (0.65–1.08)

0.175

  

Treatment with RHZ

At baseline (n = 591)

0.81 (0.59–1.09)

0.157

  

Treatment with at least three active drugs

At baseline (n = 132)

0.64 (0.46–0.91)

0.014

0.81 (0.52–1.25)

0.344

  1. HR hazard ratio, CI confidence interval, MSM Men Who Have Sex with Men, IDU injecting drug use
  2. Global Test Proportional Hazard Assumption p = 0.3689, individually all > 0.05
  3. aAdjusted for diagnostic delay, gender, known HIV positive, CD4 cell count, prior aids, tb risk factor alcohol, clinical presentation (all), Tb symptoms (fever, weight loss), chest x-ray, MDR-TB, type of diagnosis, treatment with at least three active drugs, stratified by Center
  4. bOmitted Rifampicin resistance in the multivariable model due to multicollinearity with MDR-TB
  5. cThose not included in the categories “ART naïve at TB diagnosis” and”ART use at TB diagnosis” have previously received ART and interrupted their treatment
  6. dThose with missing information for chest x-ray (n = 278), HBsAg (n = 215), Anti-HCV (n = 220) assumed negative
  7. § Index based on symptoms cough, fever, weight loss