Table 3.

Clinical features of post primary tuberculosis (TB). Weight loss and night sweats significantly more likely to occur with TB than with non tuberculous disease. Presence of TB risk factors, positive skin test and upper lobe disease on chest radiograph (CXR) are also important features of TB (Ref. ³⁶)

Symptom	TB (N=47)	Non-TB (N=516)	Odds ratio
Cough	81%	77%	1.27
Fever	70	59	1.64
Weight loss	64	27	4.74*
Night sweats	55	27	3.29*
Dyspnoea	47	50	0.88
Chest pain	27	26	1.08

^*Presence of TB risk factors or symptoms (odds ratio [OR] 7.9); positive skin test for TB (OR 13.2); upper lobe disease on chest X-ray (OR 14.6)