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Table 2 Incidence of HIV infection and sexually transmitted infections by BMI

From: High prevalence of obesity among women who enrolled in HIV prevention trials in KwaZulu-Natal, South Africa: healthy diet and life style messages should be integrated into HIV prevention programs

At enrolment HIV incidence (6.7 per 100 person year, 95% CI: 6.1-7.4 per 100 person year)
  Crude incidence rate per 100 Person Year (95% CI) p-value Unadjusted Hazard Ratio (95% CI) p-value AdjustedHazard R (95% CI) p-value
Body Mass Index (kg/m 2 )   <0.001     
Obese1 4.6 (3.8,5.6)   1   1  
Overweight2 7.8 (6.7,9.0)   1.70 (1.33,2.17) <0.001 1.36 (1.06,1.75) 0.015
Normal3 8.1 (7.0,9.4)   1.76 (1.38,2.25) <0.001 1.19 (0.92,1.55) 0.185
   STI ‡‡ incidence (15.6 per 100 person year, 95% CI:14.6-16.6 per 100 person year)  
Body Mass Index (kg/m 2 )   <0.001     
Obese1 10.9 (9.6,12.3)   1   1  
Overweight2 16.6 (15.0,18.4)   1.82 (1.55,2.14) <0.001 1.46 (1.22,1.75) <0.001
Normal3 19.8 (17.9,21.9)   1.55 (1.31,1.83) <0.001 1.40 (1.18,1.66) <0.001
  1. P value for log rank test.
  2. Age adjusted.
  3. ‡‡ Chlamydia trachomatis and gonorrhoea.
  4. 1 30+ BMI, 2 (25-<30) BMI, 3 (18.6-<25) BMI.