Table 3.

Associations between CSOM-causing microorganisms and clinical features

Clinical feature	Wald chi-square	df	p-value
Otorrhoea	0.046	2	0.831
Type of discharge	1.027	2	0.598
Quantity of discharge	12.208	2	0.002
Type of odour	0.682	1	0.409
Mode of onset	13.565	4	0.009
Presence of otalgia	5.054	1	0.025
Presence of hearing loss	10.628	1	0.001
Character of pus discharged	8.518	4	0.074
Location of TM perforation	38.279	3	0.000
Mucosal appearance	35.445	2	0.000
Granulation tissue	0.478	1	0.489
TM = tympanic membrane