January February 2010 Letter to the Editor

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.


Regarding the report of Gardner and Shirland1, I would like to clarify a few points. Firstly, our article (Kalyn, et al.2 [Ref 35]) was incorrectly categorized as a case controlled or cohort trial in Table 1 (Level IV evidence). It was actually a well designed, randomized controlled cross over trial (Level 2 evidence). An a priori sample size of 50 was calculated for a power of 0.8 and an alpha of 0.05 for a small effect size and an average correlation of 0.8 for 4 physiological variables. We utilized a cross over design with random allocation of infants to a suction procedure. After the initial suction and recovery each infant had a 90 minute washout followed by the alternate suction method. This minimized the change in respiratory status of the infant and more clearly delineated the response to the specific suction method. The final sample consisted of 200 infants who were stratified into three weight groups to account for varying endotracheal tube sizes and disease processes.

Document Type: Research Article

DOI: http://dx.doi.org/10.1891/0730-0832.29.1.13

Publication date: January 1, 2010

More about this publication?
Related content



Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more