Table 2.

Effects of individual key ingredients on Opening Minds Scale for Health Care Providers mean score change from meta-regression models

Key characteristic	Studies, n	Score change Mean (95% CI)	Univariate analysisa (95% CI)	P
Overall (crude)	22	−2.5 (−3.2 to −1.8)
Recovery			−1.7 (−2.9 to −0.5)	0.008
No	7	−1.3 (−2.3 to −0.3)
Yes	15	−3.0 (−3.8 to −2.3)
Multiple contact			−1.6 (−2.8 to −0.5)	0.006
No	12	−1.6 (−2.5 to −0.6)
Yes	10	−3.2 (−4.0 to −2.5)
Set tone			−1.3 (−2.8 to 0.3)	<0.10
No	5	−1.6 (−2.5 to −0.7)
Yes	17	−2.8 (−3.6 to −2.0)
Personal testimony			−1.1 (−2.4 to 0.3)	0.11
No	8	−1.8 (−2.9 to −0.6)
Yes	14	−2.9 (−3.7 to −2.0)
Skills			−0.7 (−2.0 to 0.7)	0.32
No	12	−2.2 (−3.4 to −0.9)
Yes	10	−2.8 (−3.7 to −1.9)
Myth busting			−0.6 (−1.9 to 0.8)	0.37
No	13	−2.3 (−3.3 to −1.2)
Yes	9	−2.9 (−3.8 to −1.9)
All 6 ingredients			−1.5 (−0.1 to −2.9)	0.04
No	17	−2.1 (−2.9 to −1.4)
Yes	5	−3.7 (−4.8 to −2.5)

^aUnivariate model, all 6 ingredients, I² = 68.4%