Total No. Person - Years in each BMI category (kg/m2)
Pre-HAART mean BMI (kg/m2) No. Total No. Person-Years Following HAART Initi0ation Underweight(<18.5) Normal
(18.5 - <25.0)
Overweight (25.0 - <30.0) Obese
(30.0 - <40.0)
Morbidly Obese
(≥40.0)
Underweight (<18.5) 17 124.6 76.8
(62%)
45.9
(37%)
1.9
(2%)
0.0
(0%)
0.0
(0%)
Normal(18.5 - <25.0) 456 4011.4 212.7
(5%)
2759.4
(69%)
887.7
(22%)
150.4
(4%)
1.2
(0%)
Overweight (25.0 - <30.0) 365 3449.8 33.6
(1%)
861.7
(25%)
1732.2
(50%)
793.9
(23%)
28.4
(1%)
Obese (30.0 - <40.0) 275 2587.5 2.3
(0%)
97.6
(4%)
486.3
(19%)
1700.7
(66%)
300.6
(12%)
Morbidly Obese (≥40.0) 64 580.5 0.0
(0%)
3.0
(1%)
20.2
(4%)
174.9 
(30%)
382.4
(66%)
Table 3: Total Person-Time in each category of body mass index (BMI) following highly active antiretroviral therapy (HAART) initiation stratified by pre-HAART mean BMI category.