Until now, just one study on the clinical outcomes of combined ACL and ALL reconstruction has been published.
So far, application of microarrays to the study of autism has been described in just one study on post-mortem brain tissue from autistic subjects and matched tissue controls [ 20].
Moreover, in this review, just one study focusing on periodontal outcomes involved follow-up in excess of 2 years [28].
Just one study reported on the 13 patients with a recurrent neuroblastoma (Piccardo 2012).
Only little scientific evaluation of treatment programs after delivery is available with just one study focusing on specific stabilizing exercises with a positive result [ 14].
Just one study investigated the impact of 'major' playground reconstruction on children's physical activity behaviour 16 and concluded that renovated schoolyards to promote physical activity may increase the number of children who are physically active and reduce sedentary behaviours.
Though few in number, it represents a significant increase in scholarly output: a literature review on this topic conducted for a study published in 2010 found just one study with the key words 'BRIC' and 'public health' [ 17].
The internal-external cross-validation approach involves removing just one study from the development phase of the model, fitting the model on the remaining IPD, and then testing performance in the excluded study.
This is of course just one study, as Dr. Cowtan is quick to note.
"This is just one study, and we need more to see whether this finding will be confirmed," Dr. Waldinger said.
