The phrase "a closed study" is correct and usable in written English.
It can be used to refer to a research or academic study that is not open to public access or participation.
Example: "The findings of a closed study on the effects of the drug will be released next year."
Alternatives: "restricted study" or "private study".
Fourthly, we included trials indicated as closed and might have missed trials with a "closed studies" status that had not been updated; the number of trials not complying may be larger than those we encountered.
This study used a closed survey recruitment process, whereby the contact details of the selected sample was sourced from the Health Professions Council of South Africa (HPCSA) website (http://www.hpcsa.co.za), or from the internet.
The 'FRAME cohort' (Frederiksberg hospitals Rheumatoid Arthritis, pain assessment and Medical Evaluation) study is a closed cohort study with an expected inclusion period from 1 March 2013 to 1 September 2014, followed by 4 months of follow-up.
In Baltimore, USA, a significant decline of the HCV incidence was found in injecting DU followed between 1988 and 1996, but in contrast to our study with ongoing recruitment of participants, this decline was observed in a closed cohort study and a saturation effect probably has contributed to this decline [ 29].
She started down the dim carpeted hall, lightening her step out of habit as she passed Father Leon's closed study door.
Week 12 data for closed study centre (n = 8 patients) was imputed using last observation carried forward for week 24.
It was not possible to repeat the study in an independent replication dataset as the 1000 Families in Newcastle Study is a closed birth cohort study, meaning the sample is not refreshed by new recruits over time.
One of the limitations of our analysis was that the data were collected as part of a closed-loop study and, therefore, contained relatively few points <70 and >250 mg/dL.
For choice of the rational triptan, the only description states that the proper choice has not yet been elucidated, as there have been few closed studies with a satisfactory number of subjects [1].
We conducted an extensive search in duplicate for publications of closed studies using several different search methods.
