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Table 3 Comparison between patients with complete data pre- and post-assessment (n = 331) and those with incomplete data (n = 164)

From: Effectiveness of usual-care cognitive-behavioral therapy for adolescents with depressive disorders rated by parents and patients – an observational study

Variable

Incomplete data

M or % (SD)

Complete

M or % (SD)

Test statistic

Statistical significance

P

Effect size (d) or odds ratio (OR)

Sociodemographic factors

 Age at start of treatment

16.26 (1.65)

15.89 (1.69)

t = 2.44

<.05

0.24

 Sex (% girls)

57.31

64.65

χ2 = 2.51

n.s.

0.73

 Grouped intelligence

3.14 (1.02)

3.00 (0.76)

t = 1.69

n.s.

0.15

 Relationship status of parents: % separated

56.71

48.04

χ2 = 3.30

n.s.

0.71

Parent rating (pre)a

 CBCL Internalizing

18.64 (8.89)

19.92 (9.53)

t = −1.34

n.s.

0.14

 CBCL Externalizing

13.85 (9.82)

12.32 (9.18)

t = 1.59

n.s.

0.16

 CBCL Total

49.22 (22.67)

48.86 (23.07)

t = 0.15

n.s.

0.01

 FBB-DES

0.84 (0.48)

0.84 (0.44)

t = 0.16

n.s.

0.01

Adolescent rating (pre)b

 YSR Internalizing

24.38 (10.96)

23.29 (11.16)

t = 0.98

n.s.

0.10

 YSR Externalizing

15.18 (8.49)

13.30 (7.53)

t = 2.42

<.05

0.23

 YSR Total

60.76 (23.40)

57.58 (23.97)

t = 1.35

n.s.

0.13

SBB-DESSBB-DES

1.10 (0.49)

1.02 (0.53)

t = 1.60

n.s.

0.17

Therapist rating

 Global functioning (pre)

3.72 (0.84)

3.50 (0.84)

t = 2.75

<.01

0.26

 Improvement global functioning (pre-post)

0.87 (1.32)

1.42 (1.31)

t = −4.38

<.001

0.41

 Treatment success for overall situation (post)

3.74 (1.46)

3.37 (1.15)

t = 3.07

<.05

0.27

 Cooperation of youngster (post)

3.42 (1.14)

3.89 (0.94)

t = −4.89

<.001

0.43

 Cooperation of parent (post)

3.75 (2.20)

4.18 (1.74)

t = −2.38

<.05

0.21

 Treatment duration (years)

1.18 (0.71)

1.43 (0.73)

t = −3.66

<.001

0.35

  1. aParent rating (raw scores): complete data of n = 331 cases were compared to n = 134 incomplete cases having pre-assessment data
  2. bAdolescent rating (raw scores): complete data of n = 331 cases were compared to n = 147 incomplete cases having pre-assessment data