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Table 1 Logistic regression for demographic characteristics associated with undiagnosed infection by sex

From: Epidemiological and viral characteristics of undiagnosed HIV infections in Botswana

Variable Category Women (n = 383 newly diagnosed, n = 2252 known cases) Men (n = 218 newly diagnosed, n = 743 known cases)
OR (95% CI)a aOR (95% CI)b OR (95% CI) aOR (95% CI)
Age 16–24 years 5.42*** (4.29–6.89) 4.63*** (2.63–8.18) 4.58*** (2.73–7.98) 12.7** (1.32–121.7)
25–34 years 0.99 (0.83–1.17) 0.81 (0.51–1.28) 4.57*** (3.25–6.43) 5.68*** (2.54–12.7)
35–44 years 0.29*** (0.25–0.35) 0.36*** (0.22–0.57) 2.64*** (1.94–3.59) 3.16** (1.45–6.87)
45–54 years 0.54*** (0.45–0.65) 0.95 (0.66–1.39) 0.98 (0.7–1.35) 1.0 (0.48–2.14)
55–64 years Ref   Ref  
Marital status Married Ref   Ref  
Single/Never married 0.73*** (0.63–0.84) 0.45*** (0.33–0.6) 2.58*** (2.0–3.27) 1.72 (1.0–2.05)
Divorced/Widowed 0.47*** (0.38–0.58) 0.25*** (0.16–0.39) 1.31 (0.79–2.19) 3.95* (1.3–11.98)
Number of childrenc None Ref    
1–5 children 0.53**(0.33–0.87)
≥ 5 children 0.36***(0.21–0.64)
Religious affiliation Affiliated with religion Ref   Ref  
No religious affiliation 1.1 (0.98–1.25) 1.33* (1.06–1.67) 0.85 (0.7–1.04) 0.8 (0.57–1.11)
Education level Tertiary Ref   Ref  
Senior secondary 0.93 (0.73–1.18) 0.64* (0.44–0.92) 1.5 (0.93–2.45) 1.55 (0.75–3.19)
Junior secondary 0.29*** (0.24–0.35) 0.37*** (0.26–0.53) 1.91*** (1.31–2.75) 1.42 (0.78–2.60)
Primary 0.21*** (0.17–0.26) 0.38*** (0.23–0.61) 0.71 (0.49–1.04) 1.19 (0.61–2.29)
Non-formal 0.27*** (0.22–0.34) 0.44** (0.26–0.75) 0.53*** (0.35–0.79) 0.94 (0.4–2.2)
  1. n number of participants, OR odds ratio, aOR adjusted odds ratio for clustering by community, CI confidence interval, Ref reference group
  2. *p < 0.05, **p < 0.01, ***p < 0.001
  3. aUnivariate logistic regression
  4. bMultivariable logistic regression
  5. cExcluded from the multivariable due to interaction with other variables