Table 2 Estimated mean score and changes between the intervention and control group on outcomes for case 0 vs case 2, and for case 1 vs case 2, respectively

 Leadership (score 0.00–4.00) ^a

2.77 (.11)

2.67 (.11)

3.17 (.10)

2.48 (.17)

2.50 (.12)

2.59 (.11)

mean change = .30

SE = 0.20

p = .149

mean change = .42

SE = 0.14

p = .003

 Teamwork (score 0.00–4.00) ^a

2.58 (.09)

2.45 (.08)

2.78 (.10)

2.50 (.14)

2.43 (.10)

2.70 (.10)

mean change = .01

SE = 0.13

p = .962

mean change = .06 SE = 0.08

p = .508

 Task management (score 0.00–4.00)^a

2.73 (.13)

2.50 (.11)

3.12 (.07)

2.71 (.15)

2.60 (.08)

2.85 (.14)

mean change = .24 SE = .17

p = .157

mean change = .36 SE = .15

p = .018

 Overall

(score 0.00–10.00) ^a

6.92 (.24)

6.55 (.19)

7.87 (.16)

6.77 (.28)

6.61 (.26)

7.61 (.19)

mean change = .10 SE = .36

p =. 775

mean change = .32 SE = .23

p = .174

 Total

(score 0.00–4.00) ^a

2.64 (.09)

2.50 (.08)

2.91 (.08)

2.53 (.14)

2.47 (.08)

2.70 (.10)

mean change = .10

SE = .13

p = .434

mean change = .18

SE = .08

p = .030

ABCDE-checklist

(score 0.00–3.00) ^a

9 item case 1

10 item case 2

2.14 (.06)

2.21 (.05)

2.52 (.03)

2.11 (.06)

2.09 (.08)

2.48 (.07)

mean change = .01

SE = .10

p = .897

mean change = − .084

SE = .12

p = .492

TSAGAT

(score 0.00–1.00) ^b

.45 (.03)

.55 (.03)

.48 (.03)

.49 (.02)

mean change = .08

SE = .05

p = 0.062