10. Post‐hoc subgroup analysis: effect of human support components in supportive interventions.

Class	All supportive interventions, MD (95%CI)	Intervention involved human support, MD (95%CI)	Intervention involved scheduled human support, MD (95%CI)
Supportive	0.70 (0.35 to 1.05) I2 = 42% (Analysis 2.1)	Any human support1: 0.84 (0.52 to 1.17) I2 = 10% Automated support only2: 0.26 (‐0.51 to 1.04) I2 = 64% Test for subgroup differences: Chi² = 1.85, df = 1 (P = 0.17), I² = 46.0% Analysis 6.5	Pre‐scheduled human support3: 1.43 (0.61 to 2.24) I2 = 0% No Scheduled human support4: 0.58 (0.33 to 0.83) I2 = 45% Test for subgroup differences: Chi² = 3.82, df = 1 (P = 0.05), I² = 73.8% Analysis 6.6

1. Chervin 1997; Fox 2012; Hoet 2017; Hoy 1999; Parthasarathy 2013; Pepin 2019; Stepnowsky 2007; Stepnowsky 2013; Turino 2017

2. DeMolles 2004; Hwang 2017; Mendelson 2014; Munafo 2016

3. Chervin 1997; Hoy 1999; Parthasarathy 2013

4. DeMolles 2004; Fox 2012; Hoet 2017; Hwang 2017; Mendelson 2014; Munafo 2016; Pepin 2019; Stepnowsky 2007; Stepnowsky 2013; Turino 2017