Impact of a large-scale educational intervention program on venous blood specimen collection practices

Table 4 Changes in self-reported adherence to VBSC guidelines

	IG/CG	IG				CG				IG/CG
Questions	p ¹	2007/2010–2011 (%)	n	p ²	ES	2007/2010–2011 (%)	n	p ²	ES	p ³	ES
9 Always allow the patient to rest 11- >15 minutes prior to specimen collection	0.840	21/37	80	0.002	0.54	30/23	76	0.405	0.24	0.004	0.27
14 Always write in sampling time (0–30 minutes after sampling)	0.233	45/51	84	0.405	0.46	51/64	77	0.064	.39	0.687	0.07

p ¹ = Between IG and CG at baseline.
p ² = McNemar, (within IG and CG).
p ³ = Chi-square for independence (between IG and CG), IG = Intervention group, CG = Control group.
Significant improvement = p < 0.01 marked with bold font. Significant improvement = p < 0.01 because of repeated tests. Effect size measured by Cramer’s V.
% = Percentage of correct answer.

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