Table 7.

Linear regression for independent predictors of 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
Age group (in years)
< 15	−0.26	−0.69,0.17	0.240
15–44	−0.10	−0.19,-0.01	0.037^
45–64	0.03	−0.07,0.13	0.560
> =65	Ref	Ref	Ref
Gender
Male	Ref	Ref	Ref
Female	0.11	0.05,0.18	< 0.001^
Classification
PTB smear positive	0.21	0.08,0.33	0.001^
PTB smear negative	−0.01	−0.13,0.10	0.814
PTB smear status unknown	0.44	0.01,0.87	0.047^
Pleurisy	Ref	Ref	Ref
EPTB	0.53	−0.88,1.95	0.462
Registered at referral hospital
Yes	Ref	Ref	Ref
No	−0.06	−0.13,-0.003	0.037^

TB tuberculosis, PTB pulmonary tuberculosis, EPTB extrapulmonary tuberculosis

^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; occupation, permanent residence, treatment category and HIV status, though considered, were excluded by the model (likelihood ratio test)

F stat for model = 9.28; 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