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Table 3 Demographic, laboratory, and disease-related variables in HIV-infected patients with normal TBS and low TBS

From: Trabecular bone scores in young HIV-infected men: a matched case-control study

Variables (N (%) or mean ± SD)

Normal TBS (< 1.31, N = 74)

Low TBS (≤1.31, N = 6)

P-value

Demographic findings

 Age, years

38.4 ± 8.7

37.7 ± 7.6

0.83

 BMI (kg/m2)

22.9 ± 2.8

23.4 ± 5.5

0.84

 Currently smoking

34 (45.9%)

2 (33.3%)

0.550

 Alcohol ≥3 units/day

3 (4.1%)

0 (0%)

0.615

 Previous fracture

8 (10.8%)

2 (33.3%)

0.109

 Underlying disease

  Diabetes mellitus

3 (4.1%)

0 (0%)

0.615

  Hypertension

4 (5.4%)

0 (0%)

0.559

  Dyslipidemia

8 (10.8%)

0 (0%)

0.395

Laboratory findings

 Total lymphocyte

2921.7 ± 1481.3

2393.8 ± 660.5

0.39

 Urea nitrogen (mg/dl)

13.4 ± 3.5

10.9 ± 2.5

0.10

 Creatinine (mg/dl)

0.9 ± 0.1

0.77 ± 0.08

0.003

 Calcium (mg/dl)

9.1 ± 0.3

9.3 ± 0.2

0.21

 Phosphorus (mg/dl)

3.3 ± 0.5

3.6 ± 0.47

0.19

 ESR (mm/h)

9.3 ± 9.1

12.1 ± 6.8

0.46

 Hemoglobin (g/dl)

15.3 ± 1.0

14.6 ± 0.4

0.12

 Platelet (103/μl)

228 ± 40

227 ± 30

0.97

 Alkaline phosphatase (U/l)

65.2 ± 18.2

58.5 ± 14.8

0.38

 25[OH]D (ng/ml)

21.2 ± 8.2

20.4 ± 6.1

0.80

 C-peptide (μg/ml)

0.4 ± 0.2

0.23 ± 0.07

0.08

 Osteocalcin (μg/ml)

19.1 ± 8.6

16.2 ± 4.3

0.41

HIV-specific factors

 Duration since HIV diagnosis (days)

2665.2 ± 1827.9

2101.2 ± 1704.1

0.47

 Nadir CD4 T-cell counts (cells/μl)

273.3 ± 158.2

360.0 ± 135.2

0.77

 RNA level (copies/ml)

151,420.4 ± 380,279.0

27,523.1 ± 54,226.9

0.37

 Current CD4 count (cells/μl)

668.2 ± 280.7

679.3 ± 130.0

0.92

 Current proportion with plasma HIV-1 RNA levels < 40 copies/ml

69 (93.2%)

6 (100%)

0.511

 On ART

73 (98.6%)

5 (83.3%)

0.02

 NNRTI

27 (36.5%)

1 (16.7%)

 

 Protease inhibitor

27 (36.5%)

1 (16.7%)

 

 Integrase inhibitor

18 (24.3%)

3 (50%)

 

 On TDF

37 (50.0%)

3 (50.0%)

1.00

 Duration of ART by regimen type, days

  NRTI

1964.9 ± 1550.6

1097.7 ± 1156.1

0.18

  NNRTI

1304.5 ± 1217.0

570.0 ± 476.5

0.40

  PI

1234.5 ± 1479.9

870.6 ± 1195.8

0.59

  Integrase inhibitor

155.4 ± 425.8

181.5 ± 271.4

0.88

  TDF

671.2 ± 429.2

709.7 ± 226.9

0.89

  1. SD Standard deviation, BMI Body mass index, ESR Erythrocyte sedimentation rate, ART Anti-retroviral therapy, TDF Tenofovir disoproxil fumarate, NRTI Nucleoside reverse transcriptase inhibitors, NNRTI Non-nucleoside reverse transcriptase inhibitors, PI Protease inhibitor