Table 2.

Data for mental strain and concentration for active participants

Membership	Role as leader		Role as follower		Difference in estimated mean	p	95% CI
	Estimated mean	SE	Estimated mean	SE
Mental strain (0–10)	5.88	0.38	4.31	0.27	1.57	<0.001	0.735 to 2.40
Concentration (1–9)	6.30	0.17	5.69	0.17	0.612	0.003	0.225 to 1.00