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Table 4 Proportion of renal dysfunction/failure, and adjusted mean differences in renal function measures by TDF exposure among 964 adults on ART for more than 6 months

From: COHORT PROFILE: The Complications of Long-Term Antiretroviral Therapy study in Uganda (CoLTART), a prospective clinical cohort

Renal function assessment parameter

Renal dysfunction/failure, n (%)

Adjusted mean differences (95% CI), non-TDF as reference

p value

eGFR (Cockcroft-Gault, adj for BSA)

 Non-TDF

99/378 (26.2%)

Ref

0.797

 TDF

142/501 (28.3%)

−2.15 (−8.53 to 4.22)

 TDF-stopped

14/50 (28.0%)

−0.62 (−12.74 to 11.50)

eGFR (Cockcroft-Gault, without BSA adj)

 Non-TDF

141/379 (37.2%)

Ref

0.914

 TDF

196/502 (39.0%)

−2.42 (−14.45 to 9.62)

 TDF-stopped

19/50 (38.0%)

−3.01 (−25.90 to 19.89)

eGFR (CKD-Epi)

 Non-TDF

60/383 (15.7%)

Ref

0.837

 TDF

109/514 (21.2%)

−0.88 (−3.84 to 2.08)

 TDF-stopped

9/50 (18.0%)

−0.78 (−6.42 to 4.87)

eGFR (MDRD with race)

 Non-TDF

28/383 (7.3%)

Ref

0.872

 TDF

57/514 (11.1%)

−0.61 (−8.09 to 6.87)

 TDF-stopped

4/50 (8.0%)

3.11 (−11.14 to 17.36)

Fractional tubular PO4 reabsorption

 Non-TDF

16/339 (4.7%)

Ref

0.131

 TDF

16/386 (4.1%)

−0.74 (−1.84 to 0.36)

 TDF-stopped

1/42 (2.4%)

1.12 (−0.92 to 3.15)

Serum urea

 Non-TDF

0/382 (0.0%)

Ref

0.252

 TDF

2/514 (0.4%)

0.03 (−0.19 to 0.25)

 TDF-stopped

0/50 (0.0%)

0.35 (−0.07 to 0.77)

Serum creatinine (μmol/l)

 Non-TDF

4/383 (1.0%)

Ref

0.336

 TDF

10/514 (1.9%)

2.03 (−1.40 to 5.46)

 TDF-stopped

3/50 (6.0%)

3.98 (−2.55 to 10.51)

Serum phosphates (mmol/l)

 Non-TDF

64/383 (16.7%)

Ref

0.575

 TDF

50/503 (9.9%)

0.01 (−0.04 to 0.06)

 TDF-stopped

8/48 (16.7%)

−0.04 (−0.13 to 0.05)

  1. Mean difference adjusted for site, duration on ART, smoking status, social-economic status, log viral load, CD4 cell count, hypertension and Glucose; Renal dysfunction/failure defined as <90 for estimated Glomerular Filtration Rates, >11.9 mmol/l for serum Urea, >109 μmol/l for serum creatinine and <0.81 mmol/l for serum phosphates (Hypophosphataemia)
  2. eGFR estimated glomerular filtration rate, BSA body surface area adjustment, CKD-Epi Chronic Kidney Disease Epidemiology formula, MDRD Modified Diet in Renal Disease formulae with race adjustment