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. 2020 May 12;43(7):zsaa068. doi: 10.1093/sleep/zsaa068

Erratum to: On-the-road driving performance the morning after bedtime administration of lemborexant in healthy adult and elderly volunteers

Annemiek Vermeeren, Stefan Jongen, Patricia Murphy, Margaret Moline, Gleb Filippov, Kate Pinner, Carlos Perdomo, Ishani Landry, Oneeb Majid, Anita C M Van Oers, Cees J Van Leeuwen, Johannes G Ramaekers, Eric F P M Vuurman
PMCID: PMC7355396  PMID: 32396197

In this article [Sleep, Volume 42, Issue 4, April 2019, zsy260, https://doi.org/10.1093/sleep/zsy260], in the Statistical analyses section of the Methods, the statistical test used in the symmetry analysis has been corrected from generalized sign tests to the McNemar test (page 4, column 2) and the sign for the increase in SDLP has been corrected from ≥ to >. The following sentence has been corrected:

To perform this symmetry analysis, the McNemar test used for each treatment condition and treatment day separately to test whether the number of participants with an increase in SDLP >2.4 cm (reflecting impairment) differed significantly (p < 0.05) from the number of participants with a decrease in SDLP < −2.4 cm (reflecting improvement).

A similar sign correction has been made to the SDLP section of the Results (page 5, column 2, paragraph 3).

The following corrections have also been made to Table 2. The column heading “Test statistic” has been corrected to “McNemar Test P-value” and the P-values have been expanded to three decimal places. Additionally, an error in the title has been corrected to include a missing minus sign and the signs in the ∆SDLP columns have been corrected from ≥ and ≤ to > and <. The corrected Table 2 is listed below. The authors regret the errors.

Table 2.

Symmetry analysis of numbers of participants whose SDLP increased more than 2.4 cm (indicating impairment) and numbers of participants whose SDLP decreased more than −2.4 cm (indicating improvement), n = 48

Treatment condition Day ∆SDLP > 2.4 n (proportion) ∆SDLP < −2.4 n (proportion) McNemar test P-value Reject H0
LEM2.5 (n = 32) 2 4 (12.5) 2 (6.3) 0.688 No
9 6 (18.8) 1 (3.1) 0.125 No
LEM5 (n = 32) 2 4 (12.5) 5 (15.6) 1.000 No
9 7 (21.9) 1 (3.1) 0.070 No
LEM10 (n = 32) 2 6 (18.8) 3 (9.4) 0.508 No
9 6 (18.8) 3 (9.4) 0.508 No
ZOP (n = 48) 2 20 (41.7) 1 (2.1) <0.0001 Yes
9 24 (50.0) 3 (6.3) <0.0001 Yes
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LEM2.5, lemborexant 2.5 mg; LEM5, lemborexant 5 mg; LEM10, lemborexant 10 mg; SDLP, standard deviation of lateral position; ZOP, zopiclone 7.5 mg.

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