Corrigendum

This article refers to:

Component analysis of verbal fluency scores in severe traumatic brain injury

Correction to:

Zakzanis, K. K., McDonald, K., Troyer, A. K. (July 2013). Component analysis of verbal fluency scores in severe traumatic brain injury. Brain Injury, 27 (7–8), pg. 903-908 DOI: 10.3109/02699052.2013.775505

Following publication of this article, an error has been identified. Some of Table I and a small portion of the results have data that is incorrect. The corrected table and results are below.

Table I. Demographic Information and Verbal Fluency Performance of Healthy Controls and Patients With Severe TBI.

	Controls (n = 54)		TBI (n = 28^a)
Variable	Mean	SD	Mean	SD
Age (years)	44.8	24.5	43.5	18.9
Education (years)	13.7	1.8	12.8	3.4
Phonemic Fluency Scores
Words generated*	41.78	10.93	34.39	13.59
Switches	27.69	7.57	25.79	11.48
Mean cluster size	0.43	0.23	0.37	0.22
Semantic Fluency Scores
Words generated	20.04	5.48	17.86	4.90
Switches**	9.74	3.38	5.64	2.51
Mean cluster size**	1.10	0.55	2.21	0.99

Note: ^a= missing age and education for one TBI patient; * = p < 0.05; ** = p < 0.001

Page 905, Column 2, Paragraph 1 (Heading: Results)

Table I provides basic demographic and verbal fluency performance information. Importantly, independent samples t-tests revealed that patients with severe TBI and the control participants did not differ significantly in age, t(79) = 0.244, p = 0.808, or years of formal education, t(79) = 1.446, p = 0.152. Regarding phonemic fluency, an independent samples t-test revealed a significant mean difference for total words generated only, t(80) = 2.667, p = 0.009. Regarding semantic fluency, an independent samples t-test revealed a trend toward significance in mean difference for total words generated, t(80) = 1.769, p = 0.081, and a significant mean difference for number of switches, t(80) = 5.647, p < 0.001, and mean cluster size, t(80) = −6.575, p < 0.001.