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Selection bias is possible in the present research, in that only a certain kind of person will enrol in a study of this kind, implying that the results should not be generalized to the older population as a whole at this stage.
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In many countries, including India, only one parent/guardian's signature is legally required to enrol a child in a study.
Between March 2006 and January 2009, 102 consecutive cases of partial/radical nephrectomy for ccRCC were enroled in a retrospective study.
A total of 34 samples were from patients enroled in a prospective study of breast toxicity in women who received conservative surgery and adjuvant radiotherapy at the Christie Hospital, Manchester.
Patients who completed at least period 1 through day 43 in this study were given the option (if they were eligible for enrollment) to enrol in an open-label LTE study A3921024 (NCT00413699).
People can enrol in the study by sending an e-mail or completing a form to be sent by mail.
A further limitation is that participation was based on inviting patients visiting participating clinics to enrol in the study, that is a 'convenience sample'.
Of these, two were admitted to hospital on their first visit to Day Hospital, three had significant cognitive impairment, 10 had only a single planned Day Hospital attendance, 9 declined to return to Day Hospital and 19 declined to enrol in the study without giving a reason.
Grudgingly, in the autumn of 1886 his father consented to allow him to enrol in a course of musical studies at Leipzig Conservatoire where Delius encountered Edvard Grieg.
These mothers will receive a text message/email inviting them to enrol in the study on the study website (as detailed above) 2 weeks after their infant's due date.
Because patients experiencing NVP could be more likely to enrol in studies like ours, the study was presented to women as a general evaluation of quality of life during pregnancy without focusing specifically on NVP, thus reducing selection bias.
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