Severity of pulmonary tuberculosis according to sex and presence or absence of non-HIV comorbidities. A. Sputum microscopy grade in males and females. B. Baseline chest x-ray score in males and females. C. Baseline chest x-ray score in the presence and absence of recognised co-morbidities. Chest x-rays were available in 145 people. Any comorbidity included diabetes, asthma, hypertension, hepatitis B, chronic renal disease, cardiovascular disease, gastrointestinal disorder or chronic back pain. Box plots show 50th centile (line), 25th and 75th centiles (box) and minimum and maximum values (whiskers).