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Table 1 Age, BMI, depression, intolerance of uncertainty, implicit leaning (means, standard deviations and ranges; N = 90)

From: Understanding implicit and explicit learning in adolescents with and without anorexia nervosa

Measure

AN-USA

N = 26

AN-NL

N = 20

HC-USA

N = 26

HC-NL

N = 18

Test statistic ANOVA

Age ** a

M = 14.73

SD = 1.56

Range = 12–17

M = 15.60

SD = 1.23

Range = 13–17

M = 14.19

SD = 1.86

Range = 11–17

M = 15.22

SD = 1.47

Range = 12–17

F(3,85) = 5.61

p < 0.01

η2 = 0.17

BMI ** b c

M = 16.14

SD = 1.53

Range = 12.49–18.34

M = 17.28

SD = 1.82

Range = 13.30–20.07

M = 20.21

SD = 2.45

Range = 16.41–25.88

M = 20.37

SD = 2.53

Range = 15.82–24.40

F(3,85) = 23.56

p < 0.01

η2 = 0.45

CDI ** a b c

M = 12.31

SD = 9.00

Range = 0–28

M = 23.89

SD = 2.23

Range = 20–27

M = 3.04

SD = 2.72

Range = 0–9

M = 7.56

SD = 5.44

Range = 2–22

F(3,85) = 51.23

p < 0.01

η2 = 0.64

IUS ** b d

M = 71.31

SD = 20.55

Range = 35–107

M = 80.53

SD = 14.55

Range = 41–107

M = 48.27

SD = 18.09

Range = 27–104

M = 64.83

SD = 15.69

Range = 28–92

F(3,85) = 13.66

p < 0.01

η2 = 0.33

Implicit learning accuracy (log) * c

M = −.21

SD = .07

Range = −.33 - -.08

M = −.18

SD = .07

Range = −.33 - -.07

M = −.21

SD = .06

Range = −.34 - -.14

M = −.27

SD = .05

Range = −.34 - -.14

F(3,85) = 3.28

p = 0.02

ηp2 = 0.10

Implicit learning reaction time (log)

M = .09

SD = .15

Range = −.18–.49

M = .04

SD = .11

Range = −.15–.29

M = .14

SD = .14

Range = −.11 - -.42

M = .06

SD = .17

Range = −.28–.30

F(3,85) = 2.18

p = 0.10

Implicit learning reaction time variability (log)

M = −.15

SD = .24

Range = −.63–0.31

M = −.18

SD = .19

Range = −.60–.15

M = −.03

SD = .31

Range = −.57–.58

M = −.05

SD = .24

Range = −.51–.45

F(3,85) = 1.74

p = 0.16

Implicit learning curve (accuracy in last block minus accuracy in first block)

M = .10

SD = .12

Range = −.11–.31

M = .03

SD = .10

Range = −.13–.2

M = .09

SD = .12

Range = −.11–.31

M = .04

SD = .10

Range = −.13–.20

F(3,85) = 1.92

p = 0.13

  1. CDI Children’s Depression Inventory, IUS Intolerance of Uncertainty
  2. * = p < 0.05; ** = p < 0.01
  3. aAN-USA and AN-NL differ significantly
  4. bAN-USA and HC-USA differ significantly
  5. cAN-NL and HC-NL differ significantly
  6. dHC-USA and HC-NL differ significantly