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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