Research Article

Determination of Seroprevalence and Risk Factors of Crimean–Congo Haemorrhagic Fever (CCHF) in the Endemic Region in Turkey: A Population-Based Cross-Sectional Study

Table 4

Logistic regression analysis of the descriptive characteristics of the participants in terms of anti-CCHFV IgG seropositivity (n = 2319).

VariablesAnti-CCHFV IgG valueCOR (95% CI)AOR (95% CI)
Seropozitivity n (%)Seronegativity n (%)

GenderFemale53 (4.2)1219 (95.8)0.001Ref.Ref.
Male77 (7.4)970 (92.6)1.83 (1.27–2.62)2.53 (1.57–4.08)
Age groups20–39 years22 (2.4)903 (97.6)<0.001Ref.Ref.
40–64 years57 (5.6)968 (94.4)2.42 (1.47–3.99)1.84 (1.05–3.20)
≥65 years51 (13.8)318 (86.2)6.58 (3.93–11.03)4.05 (2.14–7.65)
Residental areaCity center43 (6)671 (94)0.561Ref.
Districts87 (5.4)1518 (94.6)0.89 (0.61–1.30)
Education levelIlliterate-literate46 (11.2)366 (88.8)<0.001Ref.Ref.
Primary-secondary71 (5.2)1282 (94.8)0.44 (0.30–0.65)0.49 (0.30–0.80)
High school-university13 (2.3)541 (97.7)0.19 (0.10–0.36)0.33 (0.14–0.76)
Marital statusMarried111 (5.5)1901 (94.5)0.014Ref.Ref.
Single3 (2.1)139 (97.9)0.37 (0.12–1.18)0.89 (0.25–3.170)
Divorced16 (9.7)149 (90.3)1.84 (1.06–3.19)1.30 (0.70–2.42)
Family income levelBad87 (7.3)1102 (92.7)<0.001Ref.Ref.
Medium33 (4.6)685 (95.4)0.61 (0.40–0.92)0.93 (0.59–1.46)
Good10 (2.4)402 (97.6)0.32 (0.16–0.61)0.71 (0.33–1.52)
Chronic diseaseNo53 (4.9)1034 (95.1)0.151Ref.
Yes77 (6.3)1155 (93.8)1.30 (0.91–1.87)
SmokingNo86 (5.9)1365 (94.1)0.385Ref.
Yes44 (5.1)824 (94.9)0.85 (0.58–1.23)
Alcohol useNo120 (5.7)1984 (94.3)0.523Ref.
Yes10 (4.7)205 (95.3)0.81 (0.42–1.56)
Obesity (BMI ≥ 30 kg/m2)No83 (5.9)1333 (94.1)0.503Ref.
Yes47 (5.2)856 (94.8)0.88 (0.61–1.27)
Total130 (5.6)2189 (94.4)

Anti-CCHFV IgG, anti-Crimean–Congo haemorrhagic fever virus immunoglobulin G; COR, crude odds ratio; AOR, adjusted odds ratio; CI, confidence interval; Ref, reference; value of Yates’ corrected X2 test for anti-CCHFV IgG serology subgroup comparison.