Table 5.

Linear regression for independent predictors of health system diagnosis delay before registration among transferred out migrant patients with TB^a, China, 2014–15^b (N = 7262)^c

Variable	Β coefficient	95% CI	P value
Permanent residence
Within prefecture	Ref	Ref	Ref
Within province	−0.004	− 0.10,0.09	0.932
Out of province	0.13	0.07,0.19	< 0.001^
Classification
PTB smear positive	−0.16	−0.27-0.06	0.003^
PTB smear negative	0.01	−0.09,0.12	0.784
PTB smear status unknown	0.40	0.02,0.77	0.037^
Pleurisy	Ref	Ref	Ref
EPTB	−0.77	−1.99,0.45	0.218
HIV
Positive	0.06	−0.64,0.77	0.864
Negative	Ref	Ref	Ref
Unknown	−0.33	−0.38,-0.28	< 0.001^

TB tuberculosis, PTB pulmonary tuberculosis, EPTB extrapulmonary tuberculosis, HIV human immunodeficiency virus

^aregistered in web-based TB information management system

^blogarithmic transformation of delay variable done as it was not normally distributed, model building was done by stepwise (forward method) method and the final model has been presented; age group, gender, occupation, treatment category and registration at referral hospital, though considered, were excluded by the model (likelihood ratio test)

F stat for model = 26.8; Probability > F = < 0.001

^cof 7284, twenty two patient records were excluded because of missing information on dates to calculate delay

^{^}significant p-value < 0.05