Exact(4)
Scheduled follow-ups were by email (23 September) and post (23 October which included an extra questionnaire in case the original was misplaced).
The intervention group fills in an extra questionnaire targeting costs for attending the group sessions (i.e. travel distance, transportation method, public transportation cost if applicable, work absence or travel escort).
14 The questionnaire consisted of 30 questions about the corresponding author, the contributions and functions of all authors, and writing and editing assistance and other contributions from unnamed authors and other individuals (see web extra questionnaire on bmj.com).
All children and teachers from the intervention group will complete an extra questionnaire and interviews on the subjective response of the intervention program and suggested improvements at follow up (January 2010 and July 2010).
Similar(56)
Patients were asked to complete three self-administered PRO instruments: the Reflux Disease Questionnaire RDQQ) [ 10] the GERD Impact Scale GISS) [ 11] and an extra-esophageal symptoms questionnaire (XQS).
GERD: gastroesophageal reflux disease; GIS: GERD Impact Scale; HRQOL: health-related quality of life; PCP: primary care physician; PPI: proton pump inhibitor; PRO: patient-reported outcomes; QOLRAD Qualityy of Life in Reflux and Dyspepsia; RDQ Reflux Disease Questionnaire XQSQS: extra-esophageal symptom questionnaire.
Another limitation is that additional data on sexual behaviour was only available for the group that filled in extra self-administered questionnaires, which could lead to bias for the restricted data analysis.
From this population, a random sample of patients was selected to enter the study and attended a follow-up appointment, during which the Reflux Disease Questionnaire (RDQ), the GERD Impact Scale GISS) and an extra-esophageal symptoms questionnaire were self-administered.
Using the Internet also made it very easy for the researchers to identify those who were late in completing questionnaires and send reminders, with no need to send extra copies of the questionnaire.
A reminder including an extra copy of the questionnaire is sent to informal caregivers if they did not send back the first questionnaire.
First, adding extra items to a questionnaire might change the overall factor structure.
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