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Correction |

Error in Results in: Efficacy of an Internet-Based Behavioral Intervention for Adults With Insomnia

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Arch Gen Psychiatry. 2010;67(3):311-311. doi:10.1001/archgenpsychiatry.2010.5
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Error in Results. In the Original Article titled “Efficacy of an Internet-Based Behavioral Intervention for Adults With Insomnia” by Ritterband et al, published in the July 2009 issue of the Archives (2009;66[7]:692-698), 2 minor computation errors occurred in the secondary variables time in bed and sleep efficiency. These computation corrections do not substantively change any of the results and do not alter any conclusions reached about the impact of the Internet intervention on sleep. The findings should have been reported as follows. There was no significant time × group interaction for time in bed (F1,42 = 0.88, P = .35), with a mean (SD) of 482.45 (56.15) minutes at preassessment and 468.48 (66.53) minutes at postassessment for those receiving SHUTi and 487.09 (46.93) minutes at preassessment and 493.57 (46.72) minutes at postassessment for those in the wait-list control group. There was a significant time × group interaction for sleep efficiency (F1,42 = 10.40, P = .002), with those receiving SHUTi experiencing a significant improvement (P = .001) from a mean (SD) of 72.3% (16.1%) at preassessment to 86.4% (5.3%) at postassessment and those in the wait-list control group experiencing a nonsignificant change (P = .16) from 74.7% (8.7%) at preassessment to 76.8% (7.6%) at postassessment.

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