SEARCH

SEARCH BY CITATION

Data entry errors were noted in the 2011 article titled “Cognitive-Behavioral Group Therapy versus Group Psychotherapy for Social Anxiety Disorder among College Students: A Randomized Controlled Trial” by Bjornsson et al. (Depression and Anxiety, 28: 1034–1042). However, there were no changes to any of the findings or conclusions of the study. We present the corrected data below:

In Table 3, seven individuals (31.8%) in the cognitive-behavioral group therapy group had avoidant personality disorder versus six individuals (26.1%) in the group psychotherapy group. We present the corrected data in the following subsection of the Results Section.

Table 3. Means, standard deviations, and effect sizes for outcome variables at baseline and posttreatment from clinical interviews conducted by independent assessors
Measure; treatment conditionBaseline (n = 45)Posttreatment (n = 41)Cohen's DCohen's D (Heimberg et al.[9]*) 6 w/12 w
 MSDMSD  
Note
  1. CBGT, cognitive-behavioral group therapy; GPT, group psychotherapy; CGI, Clinical Global Impression Scale for social Anxiety Disorder; LSAS, Liebowitz Social Anxiety Scale. The effect sizes (Cohen's D) that were computed for Heimberg et al.'s study[9] represent assessment after 6 weeks (midtreatment) and 12 weeks (posttreatment). The control condition in that study (educational supportive group therapy) is also compared to GPT in the table.

  2. *Reference 9 in the original article: Heimberg RG, Liebowitz MR, Hope DA, et al. Cognitive behavioral group therapy vs phenelzine therapy for social phobia: 12-week outcome. Arch Gen Psychiatry 1998;55:1133–1141.

CGI
 CBGT5.110.764.061.300.99 
 GPT4.650.653.740.921.14 
LSAS fear
 CBGT44.8910.4540.1713.020.400.21/0.51
 GPT39.6511.1832.4310.830.66−0.04/0.01
LSAS avoid
 CBGT39.5012.3430.2811.980.760.26/0.50
 GPT33.1313.0326.049.670.63−0.02/0.14
LSAS total
 CBGT84.3921.6770.4424.250.61 
 GPT72.7823.2558.4819.450.67 

STUDY HYPOTHESIS

  1. Top of page
  2. STUDY HYPOTHESIS

INDEPENDENT ASSESSOR ANALYSES

There was an overall improvement by time across treatment conditions on the Clinical Global Impression Scale (F(1, 39) = 9.70, P < .01) and the Liebowitz Social Anxiety Scale (LSAS) total score (F(1, 39) = 40.58, P < .001). There were no statistically significant differences between the two treatments, when regressing treatment on posttreatment ratings, and controlling for baseline LSAS scores, on the fear subscale (t(38) = 1.35, P = .19), the avoidance subscale (t(38) = 0.24, P = .81), or the total score (t(38) = 0.82, P = .42).

SELF-REPORT QUESTIONNAIRES

There was an overall improvement by time across treatment conditions, on the Social Phobia Scale (SPS); F(1, 38) = 49.49, P < .001, the Social Interaction Anxiety Scale (SIAS); F(1, 39) = 33.32, P < .001, and the Brief Fear of Negative Evaluation Scale (BFNE); F(1, 39) = 23.44, P < .001.

Consistent with the independent assessment interview data, there were no differences between the two treatments as measured by self-report questionnaires. For example, when regressing treatment on posttreatment ratings, and controlling for baseline scores, on the SPS scale (t(37) = 0.07, P = .94), the SIAS scale (t(38) = −0.21, P = .83) and the BFNE scale (t(38) = 0.40, P = .69), there were no statistically significant differences (see Table 4). Tables 3 and 4 have now been corrected, and are presented below.

Table 4. Means, standard deviations, and effect sizes for outcome variables at baseline and posttreatment from self-report questionnaires
Measure; treatmentBaseline (n = 45)Posttreatm (n = 41)Cohen's DCohen's D (Heimberg et al.[9]*) 12 w
 MSDMSD  
Note
  1. CBGT, cognitive-behavioral group therapy; GPT, group psychotherapy; SPS, Social Phobia Scale; SIAS, Social Interaction Anxiety Scale; BFNE, Brief Fear of Negative Evaluation Scale. The effect sizes (Cohen's D) that were computed for Heimberg et al.'s study[9] represent assessment after 12 weeks (posttreatment). The control condition in that study (educational supportive group therapy) is also compared to GPT in the table. The authors used the full Fear of Negative Evaluation Scale as opposed to the Brief Fear of Negative Evaluation Scale in the current study, so comparison between the two should be done with caution.

  2. *Reference 9 in the original article: Heimberg RG, Liebowitz MR, Hope DA, et al. Cognitive behavioral group therapy vs phenelzine therapy for social phobia: 12-week outcome. Arch Gen Psychiatry 1998;55:1133–1141.

SPS
 CBGT43.2415.5632.2918.720.640.10
 GPT33.4811.2123.3513.940.810.47
SIAS
 CBGT56.5312.0946.7117.240.670.15
 GPT53.4810.0944.7414.600.710.67
BFNE
 CBGT48.828.0143.7110.200.560.14
 GPT45.916.9740.968.450.640.70