| 
   SD: Standard deviation; BMI: Body mass index; HAART: Highly active antiretroviral therapy; CD4: Cluster differentiation cell; HIV: Human immunodeficiency virus; FEV1:
 Forced expiratory volume in one second; FVC: Forced vital capacity; IgG: Immunoglobulin G; CRP: C reactive protein; WCC: White cell count; ¶Bhalla score: Appendix D.
 *Geometric means reported.
  | Characteristic | Placebo (mean ± SD) | Erythromycin (mean ± SD) | P value |  
  | Gender (M:F) | 5:9 | 13:4 |  |  
  | Age (years) | 9.1 ± 2.1 | 8.4 ± 2.4 | 0.15 |  
  | Exacerbations | 2.1 ± 2.3 | 2.2 ± 1.6 | 0.47 |  
  | Months on HAART | 17.0 ± 22.0 | 12.0 ± 12.8 | 0.57 |  
  | Weight z-score (kg) | -1.8 ± 0.9 | -1.6 ± 1.6 | 0.77 |  
  | Height z-score (cm) | -1.7 ± 1.4 | -1.7 ± 1.5 | 0.50 |  
  | BMI z-score (kg/m2) | -0.6 ± 0.9 | -0.5 ± 1.3 | 0.91 |  
  | CD4 count (%) | 22.6 ± 11.9 | 16.3 ± 6.7 | 0.01 |  
  | CD4 (total×106) | 881.6 ± 505.8 | 650.9 ± 446.7 | <0.01 |  
  | HIV viral-load (copies/ml)* | 80.0 ± 22514.3 | 0.0 ± 9635,2 | 0.97 |  
  | FEV1 (% predicted) | 53.5 ± 13.6 | 56.0 ± 15.1 | 0.54 |  
  | FVC  (% predicted) | 45.0 ± 14.3 | 49.0 ± 14.4 | 0.94 |  
  | FEF25/75 (% predicted) | 55.1 ± 25.3 | 56.0 ± 25.7 | 0.89 |  
  | IgG (g/ml) | 24.8 ± 15.4 | 26.2 ± 8.4 | 0.54 |  
  | CRP (mg/l) | 3.6 ± 16.1 | 9.4 ± 18.8 | 0.08 |  
  | Bhalla score¶ | 11.5 ± 4.3 | 15.0 ± 4.0 | 0.02 |  
  | Compliance (% medication) | 91.0 ± 9.9 | 92 ± 9.9 | 0.87 |  |