Effect of individualized communication skills training on physicians’ discussion of clinical trials in oncology: results from a randomized controlled trial

Table 3 Mixed models results of subgroup items. Results of subgroup-items

Item	Effect	Estimates	Standard error	Confidence interval 95%	p	Effect sizes^a
All items	Δ IG t₂	0.2840	0.1257	0.02947–0.5386	0.0297	0.5828
Subgroup: content specific communication skills	Δ IG t₂	0.3066	0.1303	0.04279–0.5704	0.0239	0.5694
Subgroup: general communication skills	Δ IG t₂	0.2154	0.1643	−0.1173 - 0.5481	0.1978	0.3632
Single item: global rating	Δ IG t₂	0.3960	0.1824	0.02671–0.7652	0.0363	0.5204

Mixed model with baseline as covariate
^aDerived by the formula: \( d\kern0.5em \approx \kern0.5em \frac{\widehat{\Delta}}{\sqrt{{S^2}_{obervation}}}\kern0.5em =\kern0.5em \frac{Estimate\left(\Delta {IGt}_2\right)}{\sqrt{\left({S^2}_{physician}+{S^2}_{residual}\right)}} \)

ISSN: 1471-2407