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. Author manuscript; available in PMC: 2018 Feb 1.
Published in final edited form as: Psychol Serv. 2017 Feb;14(1):57–65. doi: 10.1037/ser0000131

Table 2.

Demographic Characteristics of Youth who Received TF-CBT Through a Learning Collaborative

Test Statistic for Group Differences
Variable n (%) or
M (SD)		 Range LC site Type of LC
(original vs.
community-
based)		 Clinician role
(therapist vs.
supervisor)
Gender
(% female)		 858
(60.9%)		 44.3 –
94.1%		 χ2(12) = 55.82,
p = .000* 		χ2(1) = 0.76,
p = .384		 χ2(1) = 0.122,
p = .727
Age M = 12.22
(SD = 3.50)		 11.01 –
13.65		 F(12,1397) = 4.37,
p = .000* 		t(1408) = 1.36,
p = .174		 t(1355) = −1.49,
p = .136
Length of
treatment (in
months)		 M = 4.77
(SD = 2.01)		 3.63 –
5.39		 F(12,833) = 4.52,
p = .000*		 t(844) = 0.95,
p = .342		 t(814) = 1.59,
p = .112
Type of LC N/A N/A χ2(1) = 6.75,
p = .009*
  Original
(k = 3)		 295
(20.9%)		 N/A
  Community-
based (k = 10)		 1,115
(79.1%)		 N/A
Clinician role χ2(12) = 74.84,
p = .000* 		χ2(1) = 6.75,
p = .009* 		N/A
  Therapist 1,124
(79.7%)		 68.5 –
97.8%
  Supervisor 233
(16.5%)		 2.2 –
27.7%
  Missing 53
(3.8%)		 0.0 –
9.5%

Note.

*

Statistically significant at p < .05 level.

TF-CBT = trauma-focused cognitive-behavioral therapy; LC = learning collaborative.