Table 4.

Predictors of tuberculosis smear non-conversion in re-treatment tuberculosis cases

Variable	Total	Non-converters		Univariate analysis			Multivariate analysis
	N	n	%	Crude OR	95 % CI	p-value	Adjusted OR	95 % CI	p-value
Gender	2168	216
Female	750	54	7.2	Reference			Reference
Male	1418	162	11.42	1.66	1.21–2.29	0.002	1.68	1.21–2.33	0.002
HIV	2168	216
Negative	1509	133	8.81	Reference			Reference
Positive	528	68	12.88	1.53	1.12–2.08	0.007	1.81	1.32–2.51	0.000
Unknown	131	15	11.45	1.34	0.76–2.36	0.314	1.38	0.77–2.46	0.268
Pretreatment smear grading	2168	216
Scanty	165	5	3	Reference			Reference
AFB+	394	17	4.31	1.44	0.52–3.97	0.479	1.56	0.56–4.32	0.389
AFB++	432	38	8.79	3.08	1.19–7.98	0.020	3.54	1.36–9.20	0.009
AFB+++	1099	152	13.83	5.14	2.07–12.7	<0.000	5.79	2.33–14.4	0.002
Not recorded	78	4	5.13	1.73	0.45–6.63	0.424	1.99*	0.52–7.68	0.315