borderline significantp=0.061
Presence of symptoms 2 weeks after the onset of ARI showed a borderline significant difference between clusters determined at swab A (p=0.061): symptomatic infants were more common in cluster A2 (37.3%, p=0.025) and underrepresented in clusters A3 (12.9%, p<0.01) and A4 (7.1%, p<0.01) ( table 3 ).