Improving detection and notification of tuberculosis cases in students in Shaanxi province, China: an intervention study

Table 4 Referral, tracing and arrival rates in the control and intervention group before and after implementation of intervention measures

		Registered TB suspects	Referred TB suspects	Referral rate	Referral arrival	Referral arrival rate	Direct arrival within 3 days	TB suspects to be traced	TB suspects traced	Tracing rate	Tracing arrival	Tracing arrival rate	TB suspects arrived	Total arrival rate
		n	n	%	n	%	n	n	n	%	n	%	n	%
		A	B	C	D	E	F	G	H	I	J	K	L	M
Before	Control	88	36	40.9	16	44.4	16	56	26	46.4	11	42.3	43	48.9
	Intervention	92	41	44.6	17	41.5	15	60	27	45	10	37.0	42	45.7
	P-Value			0.62		0.79				0.88		0.69		0.67
After	Control	65	29	44.6	13	44.8	6	46	24	52.1	11	45.8	30	46.2
	Intervention	73	71	97.2	59	83.1	0	14	13	95	9	69.2	68	93.2
	P-Value			<0.001		<0.001				<0.001		0.31		<0.001

Note: C = B/A*100%, E = D/B*100%, G = A-D-F, I = H/G*100%, K = J/H*100%, L = D + F + J, M = L/A*100%

ISSN: 1471-2458