Table 2

Symptoms and their duration in patients with pulmonary tuberculosis by smear status

CharacteristicsTotal
n
Smear statusP value*
Positive
n (%)
Negative
n (%)
Assessed, n313151162
Symptomatic
 Yes245143 (94.7)102 (63.0)<0.001
 No688 (5.3)60 (37.0)
Symptoms
 Respiratory217133 (88.1)84 (51.8)<0.001
  Cough (dry)14990 (59.6)59 (36.4)
  Cough (productive)5036 (23.8)14 (8.6)
  Haemoptysis4637 (24.5)9 (5.5)
  Chest pain3117 (11.2)14 (8.6)
 Absence of dyspnoea
  Yes249109 (72.2)140 (86.4)<0.001
  No6442 (27.8)22 (13.6)
 Constitutional176113 (74.8)63 (38.8)<0.001
  Weight loss12176 (50.3)45 (27.7)
  Fever10168 (45.0)33 (20.3)
  Night sweats5236 (23.8)16 (9.8)
  Fatigue5131 (20.5)20 (12.3)
 Both†
  Yes151105 (69.5)46 (28.4)<0.001
  No16246 (30.5)116 (71.6)
Duration of symptoms
 ≥2 weeks221133 (88.0)88 (54.3)<0.001
 <2 weeks9218 (12.0)74 (45.7)
  • *Difference in proportions [(smear-positive)−(smear-negative)]; sample size was adequate to detect observable differences.

  • †Patients with some combination of both respiratory and constitutional symptoms.