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Table 3 Associations of seropositivity and co-infections with sex, age, province of residence, and year of blood donation (results of five multivariable logistic regression models)

From: Seroprevalence of hepatitis B, hepatitis C, human immunodeficiency virus, Treponema pallidum, and co-infections among blood donors in Kyrgyzstan: a retrospective analysis (2013–2015)

 

AORs and 95%CIsa

Variables

HBV

HCV

HIV

T. pallidum

Co-infectionsb

Sex

 Male

1.63 (1.40 – 1.90)

0.85 (0.74 – 0.98)

0.65 (0.49 – 0.85)

1.09 (0.94 – 1.26)

1.64 (1.09 – 2.48)

 Female

ref.

ref.

ref.

ref.

ref.

Age group

  < 20 years

1.02 (0.76 – 1.39)

0.84 (0.55 – 1.27)

0.83 (0.46 – 1.51)

0.80 (0.45 – 1.41)

0.84 (0.20 – 3.49)

 20 – 29 years

ref.

ref.

ref.

ref.

ref.

 30 – 39 years

1.40 (1.24 – 1.58)

1.70 (1.46 – 1.97)

0.88 (0.65 – 1.20)

4.44 (3.75 – 5.26)

4.20 (2.72 – 6.48)

 40 – 49 years

1.37 (1.17 – 1.60)

1.93 (1.62 – 2.30)

0.75 (0.49 – 1.15)

8.95 (7.54 – 10.62)

9.32 (6.07 – 14.29)

 50 – 59 years

1.00 (0.78 – 1.28)

2.25 (1.82 – 2.79)

0.72 (0.41 – 1.28)

6.54 (5.26 – 8.14)

7.10 (4.13 – 12.21)

  > 60 years

2.35 (1.35 – 4.09)

2.24 (1.17 – 4.27)

NA

4.43 (2.15 – 9.13)

7.91 (1.87 – 33.43)

Province of residence

 Bishkek (capital)

ref.

ref.

ref.

ref.

ref.

 Chuy province

1.00 (0.88 – 1.13)

0.96 (0.84 – 1.11)

0.73 (0.53 – 1.01)

1.07 (0.93 – 1.23)

0.92 (0.65 – 1.29)

 Issyk-Kul province

0.86 (0.68 – 1.09)

0.73 (0.54 – 0.97)

1.65 (1.10 – 2.46)

1.57 (1.24 – 1.98)

0.61 (0.28 – 1.33)

 Talas province

1.41 (1.05 – 1.89)

0.75 (0.47 – 1.17)

0.72 (0.29 – 1.78)

0.80 (0.50 – 1.26)

NA

 Naryn province

1.09 (0.86 – 1.38)

0.85 (0.77 – 1.15)

1.53 (0.97 – 2.41)

1.44 (1.12 – 1.87)

1.24 (0.67 – 2.30)

 Jalal-Abad province

1.80 (1.42 – 2.28)

1.08 (0.87 – 1.92)

0.96 (0.48 – 1.89)

2.03 (1.54 – 2.68)

1.66 (0.85 – 3.24)

 Osh province

1.70 (1.26 – 2.30)

1.29 (1.07 – 2.32)

0.69 (0.26 – 1.89)

1.54 (1.04 – 2.27)

2.19 (1.05 – 4.59)

 Batken province

2.31 (1.71 – 3.13)

0.71 (0.40 – 1.26)

1.42 (0.62 – 3.24)

1.38 (0.89 – 2.16)

0.96 (0.30 – 3.08)

Year of blood donation

 2013

ref.

ref.

ref.

ref.

ref.

 2014

0.95 (0.84 – 1.08)

0.72 (0.62 – 0.84)

5.22 (3.48 – 7.83)

0.86 (0.74 – 1.00)

0.96 (0.66 – 1.41)

 2015

0.79 (0.69 – 0.90)

0.78 (0.67 – 0.90)

2.71 (1.74 – 4.20)

1.00 (0.86 – 1.16)

1.25 (0.871.79)

  1. NA not assessed
  2. aAdjusted for all variables in the table
  3. bIn total, 180 (0.48%) blood donors were positive for multiple infections (see Fig. 2)