Prospective evaluation of a complex public health intervention: lessons from an initial and follow-up cross-sectional survey of the tuberculosis strain typing service in England

Table 2 Knowledge: Awareness to the TB-STS and access to strain typing data and resources

		Initial survey		Follow-up survey
		n	%	n	%	p-value^d
Heard of the TB-STS ^a	Total	105	85.4	123	99.2	<0.001
Profession	Health protection	28	100	28	100	.
	Physician	20	66.7	30	100	0.001
	Nurse	57	86.4	65	98.5	0.015
TB incidence	Low	49	87.5	56	100	0.006
	Medium	24	72.7	32	97.0	0.010
	High	32	91.4	35	100	0.077
Access to strain typing data ^b	Total	90	72.6	108	87.1	0.004
Profession	Health protection	26	92.9	27	96.4	0.553
	Physician	21	70.0	23	76.7	0.559
	Nurse	43	65.2	58	87.9	0.002
TB incidence^c	Low	38	67.9	47	83.9	0.047
	Medium	24	72.7	28	84.9	0.228
	High	28	80.0	33	94.3	0.074
Access to training	(health protection staff)	8	28.6	19	67.9	0.003
Access to resources	(health protection staff)	16	57.1	23	82.1	0.042

^aHave you heard of the TB-STS (apart from in this survey)? (Yes / No).
^bDo you have access to strain typing data? (Yes / No).
^cArea where respondents worked is defined as low, medium and high TB incidence: <10/100,000, 10-19/100,000, ≥20/100,000 population, respectively.
^dchi² test of significance comparing responses from the initial and follow-up surveys.

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