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. Author manuscript; available in PMC: 2013 Jul 1.
Published in final edited form as: Psychother Res. 2012 Mar 26;22(4):475–488. doi: 10.1080/10503307.2012.674790

Table IV.

Generalizability coefficients at the therapist level for competence ratings by independent judges across various numbers of sessions and patients

Number of sessions

1 2 3 4 5 6

Number of patients per therapist
Supportive expressive therapy
 1 0.21 0.27 0.30 0.32 0.33 0.34
 2 0.33 0.41 0.45 0.47 0.48 0.49
 3 0.42 0.50 0.53 0.55 0.56 0.57
 4 0.48 0.55 0.58 0.60 0.61 0.62
 5 0.52 0.60 0.62 0.64 0.65 0.65
 6 0.56 0.63 0.65 0.67 0.67 0.68
 7 0.59 0.65 0.67 0.69 0.69 0.70
 8 0.61 0.67 0.69 0.70 0.71 0.72
 9 0.63 0.69 0.71 0.72 0.72 0.73
 10 0.65 0.70 0.72 0.73 0.73 0.74
 11 0.66 0.71 0.73 0.74 0.74 0.75
 12 0.68 0.72 0.74 0.75 0.75 0.76
 13 0.69 0.73 0.75 0.75 0.76 0.76
 14 0.70 0.74 0.75 0.76 0.76 0.77
Cognitive therapy
 1 0.35 0.45 0.49 0.52 0.53 0.54
 2 0.49 0.59 0.63 0.65 0.67 0.68
 3 0.57 0.66 0.70 0.72 0.73 0.74
 4 0.61 0.70 0.73 0.75 0.77 0.77
 5 0.64 0.73 0.76 0.78 0.79 0.80
 6 0.66 0.75 0.78 0.79 0.80 0.81
 7 0.68 0.76 0.79 0.81 0.82 0.82
 8 0.70 0.77 0.80 0.82 0.83 0.83
 9 0.71 0.78 0.81 0.82 0.83 0.84
 10 0.72 0.79 0.81 0.83 0.84 0.84
 11 0.72 0.79 0.82 0.83 0.84 0.85
 12 0.73 0.80 0.83 0.84 0.85 0.85
 13 0.73 0.80 0.83 0.84 0.85 0.86
 14 0.74 0.81 0.83 0.85 0.85 0.86
Individual drug counseling
 1 0.26 0.35 0.39 0.42 0.44 0.45
 2 0.41 0.51 0.55 0.58 0.60 0.61
 3 0.50 0.60 0.64 0.66 0.68 0.69
 4 0.57 0.66 0.69 0.71 0.73 0.73
 5 0.62 0.70 0.73 0.75 0.76 0.77
 6 0.65 0.73 0.76 0.77 0.78 0.79
 7 0.68 0.75 0.78 0.79 0.80 0.81
 8 0.71 0.77 0.80 0.81 0.82 0.82
 9 0.73 0.79 0.81 0.82 0.83 0.83
 10 0.74 0.80 0.82 0.83 0.84 0.84
 11 0.76 0.81 0.83 0.84 0.84 0.85
 12 0.77 0.82 0.84 0.84 0.85 0.85
 13 0.78 0.83 0.84 0.85 0.86 0.86
 14 0.79 0.83 0.85 0.86 0.86 0.86

Note. Generalizability coefficients ≥ .80 are in bold.