Table 2 Effect size of online MBI vs. Control groups

Online MBI vs. Control groups

32

0.353

0.009

0.089, 0.616

0.134

92.1

391.1

< 0.001

Single Online MBI group

pre- vs. post (r = .0)

26

0.674

< 0.001

0.479, 0.870

0.100

79.6

122.7

< 0.001

pre- vs. post (r = .8)

26

0.714

< 0.001

0.534, 0.893

0.092

95.6

578.4

< 0.001

Single Control group

pre- vs. post (r = .0)

25

0.146

0.064

− 0.009, 0.301

0.079

58.9

58.5

< 0.001

pre- vs. post (r = .8)

25

0.206

0.006

0.059, 0.353

0.075

91.6

286.7

< 0.001