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Table 2 Seroprevalence and association between KSHV seropositivity and Principal components (PCs) by quartile

From: A population-based study of Kaposi Sarcomaassociated herpesvirus seropositivity in Uganda using principal components analysis

Principal components KSHV seropositivity Univariate Multivariablea Full multivariable modelb
  % 95% CI OR 95% CI OR 95% CI OR 95% CI
Sexual behavioral         
1st quartile 49.2 50.0, 54.4 Ref Ref Ref Ref Ref Ref
2nd quartile 56.6 51.5, 61.6 1.35 1.01, 1.80 1.11 0.82, 1.51 1.08 0.79, 1.46
3rd quartile 56.7 51.9, 61.7 1.36 1.02, 1.80 1.06 0.77, 1.45 1.02 0.73, 1.42
4th quartile 56.2 51.5, 60.9 1.33 1.01, 1.73 0.95 0.69, 1.32 0.96 0.68, 1.35
P value for heterogeneity 0.106   0.10   0.74   0.89  
P value for trend    0.066   0.61   0.58  
Socioeconomic         
1st quartile 61.6 57.3, 65.9 Ref Ref Ref Ref Ref Ref
2nd quartile 56.8 52.2, 61.4 0.82 0.65, 1.05 0.85 0.67, 1.08 0.87 0.67, 1.14
3rd quartile 48.8 43.7, 53.9 0.60 0.46, 0.78 0.61 0.47, 0.81 0.68 0.49, 0.92
4th quartile 50.6 45.4, 55.8 0.64 0.49, 0.84 0.67 0.50, 0.91 0.78 0.54, 1.13
P value for heterogeneity 0.0003*   0.0004*   0.005   0.095  
P value for trend    0.0001*   0.002*   0.037*  
Knowledge         
1st quartile 59.9 55.5, 64.4 Ref Ref Ref Ref Ref Ref
2nd quartile 55.5 50.0, 60.9 0.83 0.63, 1.11 0.85 0.64, 1.14 1.00 0.74, 1.36
3rd quartile 47.7 42.8, 52.5 0.61 0.47, 0.79 0.63 0.48, 0.82 0.76 0.57, 1.02
4th quartile 54.4 49.8, 58.9 0.80 0.62, 1.02 0.80 0.63, 1.03 0.96 0.74, 1.25
P value for heterogeneity 0.004*   0.003*   0.006*   0.18  
P value for trend    0.012*   0.018*   0.49  
  1. a. Adjusted for age, sex, geographical region; b. Adjusted for age, sex, and geographical region and other PCs; * p-value < 0.0.