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Table 2 Unweighted logistic regression of HIV infection and various factors among TSMSM in Nairobi, Kenya (n= 239)

From: HIV prevalence and associated risk factors among young tertiary student men who have sex with men (MSM) in Nairobi, Kenya: a respondent-driven sampling survey

Variable

Category

Unadjusted Odds Ratio (95% CI)

p value

Adjusted Odds Ratio (95% CI)

p value

Sociodemographic characteristics

 Type of institution

Public

1

  

Ref

Private

3.5 (1.4–9.0)

0.008

6.0 (1.2–30.0)

0.027*

 Residence

College/rented hostel

1

  

Ref

With family

2.9 (1.1–7.4)

0.031

3.0 (0.7–13.2)

0.572

Sexual behavior characteristics

 Age at first anal sex with a man

 ≤ 18 years

1

  

Ref

 > 18 years

0.7 (0.3–1.8)

0.457

0.6 (0.2–2.4)

0.516

 Preferred age of sex partner

Same/younger age

1

  

Ref

Any age

4.8 (1.6–13.8)

0.004

5.2 (1.1–25.2)

0.041*

Older

5.7 (1.5–20.7)

0.009

1.1 (0.1–9.2)

0.948

 Age of last sexual partner

15–24

1

  

Ref

 ≥ 25

5.6 (2.1–14.8)

 < 0.001

6.4 (1.2–34.6)

0.030*

 Sexual role at first anal sex with a man

Versatile

1

  

Ref

Insertive

1.4 (0.4–5.7)

0.588

4.9 (0.7–32.7)

0.097

Receptive

2.1 (0.5–8.2)

0.280

2.0 (0.3–12.7)

0.476

 Preferred sexual role

Insertive

1

   

Versatile

1.2 (0.4–3.6)

0.763

0.5 (0.1–2.4)

0.380

Receptive

1.9 (0.6–5.8)

0.259

1.6 (0.3–8.6)

0.572

 Nature of first anal sex with a man

Coerced/forced

1

  

Ref

Consensual

4.1 (0.5–31.3)

0.177

0.1 (0.1–1.5)

0.090

 Number of men had anal sex with in last 12 months

One

1

  

Ref

More than one

8.4 (1.1–64.4)

0.040

8.3 (0.7–94.6)

0.088

 Participated in group sex within last 12 months

No

1

  

Ref

Yes

1.3 (0.4–4.2)

0.629

0.9 (0.2–4.3)

0.877

 Where last sex partner was met

Offline

1

  

Ref

Online

4.2 (1.6–11.0)

0.004

4.2 (1.1–17.0)

0.043*

 Used condom with last sex partner

No

1

  

Ref

Yes

1.2 (0.5–3.4)

0.673

4.3 (0.9–20.3)

0.065

 Received money from last sex partner

Yes

1

  

Ref

No

1.1 (0.3–3.4)

0.894

3.5 (0.7–18.7)

0.139

 Taken alcohol/other drug during last sexual encounter

No

1

  

Ref

Yes

1.5 (0.6–3.7)

0.390

2.3 (0.6–8.7)

0.214

Sexually transmitted infections test results

 Mycoplasma genitalium test

Negative

1

  

Ref

Positive

3.3 (1.1–10.2)

 < 0.001

2.1 (0.5–9.1)

0.293

 Neisseria gonorrhea test

Negative

1

   

Positive

4.6 (1.7–12.3)

 < 0.001

7.8 (2.0–29.9)

0.003*

  1. TSMSM: tertiary student men who have sex with men
  2. Three records had missing values and were excluded from the logistic regression
  3. *Independent risk factor for HIV infection