Table 3. Multivariable analysis of factors associated with sputum culture testing in TB retreatment patients who had positive sputum smears.

Variable	β	P Value	OR	95% CI
Province
Shandong vs. Sichuan	3.179	<0.001	24.032	8.582–67.297
Jiangsu vs. Sichuan	1.28	0.033	3.597	1.113–11.629
Sex (Male vs. Female)	0.67	0.153	1.955	0.780–4.901
Age (Years)	0.004	0.800	1.004	0.976–1.032
Education		0.439
≤6 years vs. Illiterate	0.543	0.310	1.722	0.603–4.917
>6 years vs. Illiterate	0.789	0.210	2.202	0.641–7.560
Number of previous anti-TB treatments	1.606	0.007	4.984	1.559–15.935
(≥2 episodes vs. 1 episode)
Household income per capita (¥)	1.327	0.013	3.768	1.325–10.719
(≥8895.9 vs. <8895.9)
Last treatment result (Fail vs. Success)	0.938	0.046	2.556	1.016–6.431