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Table 2 Factors associated with developing anemia or severe anemia in multivariable adjusted analyses among those free of anemia (n = 12,249) or among those free of severe anemia (n = 14,301) at baseline

From: Anemia risk factors among people living with HIV across the United States in the current treatment era: a clinical cohort study

Participant characteristics

Anemia

n = 12,249

Hazard ratio (95%CI)

Severe anemia

n = 14,301

Hazard ratio (95% CI)

Age per 10 years

1.11 (1.04, 1.18)

1.05 (0.95, 1.16)

Female (ref male)

2.45 (2.12, 2.82)

2.09 (1.69, 2.58)

Race/ethnicity (ref white)

 Black

1.19 (1.03, 1.39)

0.83 (0.65, 1.05)

 Hispanic

0.90 (0.72, 1.13)

1.06 (0.76, 1.47)

 Other/missing

0.99 (0.71, 1.39)

1.13 (0.69, 1.86)

Hepatitis C virus coinfection

1.79 (1.56, 2.05)

1.62 (1.31, 1.99)

CD4 cell count (cells/mm3) (ref ≥500)

 350–499

1.38 (1.16, 1.65)

2.23 (1.68, 2.97)

 200–349

1.67 (1.39, 2.02)

2.39 (1.78, 3.22)

 100–199

2.83 (2.28, 3.62)

3.89 (2.77, 5.45)

  < 100

8.40 (6.85, 10.51)

15.53 (11.56, 20.92)

Viral load ≥400 copies/ml

1.43 (1.23, 1.64)

1.86 (1.48, 2.34)

Kidney function (eGFR) (ref > 60)

 30–60

2.35 (1.91, 2.89)

2.67 (1.97, 3.63)

  < 30

17.84 (13.94, 24.02)

23.01 (17.85, 29.68)

ART use

0.92 (0.80, 1.05)

1.00 (0.81, 1.23)

BMI (ref 18.5- < 25)

  < 18.5

0.89 (0.59, 1.32)

1.23 (0.77, 1.96)

 25.0 to < 30.0

0.88 (0.77, 1.02)

0.73 (0.58, 0.91)

  ≥ 30.0

1.02 (0.87, 1.20)

0.92 (0.72, 1.17)

Smoking status (ref never)

 Former

0.89 (0.75, 1.06)

0.82 (0.63, 1.07)

 Current

1.08 (0.94, 1.25)

0.90 (0.72, 1.12)

Hazardous alcohol usea

0.93 (0.81, 1.06)

1.07 (0.87, 1.31)

Illicit drug useb

0.99 (0.86, 1.14)

0.99 (0.77, 1.21)

  1. a Hazardous alcohol use defined a score of ≥4 for women or ≥ 5 for men on the AUDIT-C scale
  2. b Use of cocaine/crack, methamphetamines/crystal, and/or illicit opioids
  3. Abbreviations: ART: antiretroviral therapy; BMI: body mass index; eGFR: estimated glomerular filtration rate