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Table 1 Associations between sociodemographic variables and serological reactivity for HPV16

From: Determinants of baseline seroreactivity to human papillomavirus type 16 in the Ludwig-McGill cohort study

Characteristic and categories HPV16 seroreactivity 425/1624 (%)* OR (95%CI)**
Unadjusted Adjusted (HPV16 and age)
Age:    
<25 64/344 (15.7) 1.0 1.0
25-34 161/646 (20.0) 1.33 (0.97-1.84) 1.38 (0.97-1.84)
35-44 136/471 (22.4) 1.55 (1.11-2.15) 1.60 (1.15-2.23)
45+ 64/163 (28.2) 2.11 (1.42-3.12) 2.16 (1.45-3.22)
Ethnicity:    
White 226/900 (20.1) 1.0 1.0
Non-white 139/479 (22.5) 0.87 (0.69-1.08) 0.84 (0.68-1.06)
Marital Status:    
Single 49/162 (23.2) 1.0 1.0
Married/With partner 330/1339 (19.8) 0.81 (0.58-1.14) 0.76 (0.58-1.14)
Widowed/Separated 46/122 (27.4) 1.24 (0.78-1.98) 1.01 (0.54-1.09)
Education:    
<Elementary 114/345 (24.8) 1.0 1.0
Elementary 240/964 (19.9) 0.75 (0.58-0.97) 0.81 (0.62-1.05)
High School 63/262 (19.4) 0.72 (0.51-1.02) 0.85 (0.59-1.21)
College/University 8/51 (13.6) 0.47 (0.21-1.03) 0.51 (0.23-1.12)
Income Quartiles:    
1st Quartile 112/359 (23.8) 1.0 1.0
2nd Quartile 114/431 (20.9) 0.84 (0.63-1.13) 0.88 (0.65-1.18)
3rd Quartile 92/406 (18.5) 0.73 (0.53-0.98) 0.71 (0.52-0.97)
4th Quartile 94/399 (19.1) 0.75 (0.55-1.02) 0.74 (0.54-0.99)
  1. *Frequencies above and below the threshold for the top 20% quintile and percentage with high seroreactivity; **Odds ratios and respective 95% confidence intervals. First category in each variable is the referent.