Exact(4)
Vital status was determined as of 1 January 2008, by contacting all participants initially by letter with a health update questionnaire and consent form.
Incident invasive breast cancer cases were identified through self-report from the annual study update questionnaire, physician reports, or through reports from the next of kin.
Follow-up ended on 31 December 2006, with breast cancer cases exiting at the date of diagnosis and non-cases exiting at the date of the most recent annual study update questionnaire without a report of breast cancer.
A second follow-up assessment was performed at six months which was identical to the one performed at seven weeks only with the addition of a health update questionnaire (HUQ) (Appendix).
Similar(56)
Each year, participants were sent annual study update questionnaires that asked whether they had been diagnosed with cancer by a health care provider.
First, based on a systematic literature search on risk factors for functional status decline in older persons [ 4], potential new domains for inclusion in the updated questionnaire were identified.
Although a few large cohort studies have managed to collect updated questionnaire information every year or two on exposures in their cohort (e.g., Bernstein et al, 2002; Hays et al, 2003; Nurses Health Studyy, 2011), many have not, and the few collections of long-term repeat blood samples have been of a very limited scale (Nurses Health Studyy, 2011; Women's Health Initiative, 2011).
A list of instruments to be considered was developed for each domain of the updated questionnaire, in conjunction with information from the current literature informing the experts about the validity and reliability of each instrument for use in community-dwelling older people.
Afterwards, in 1998, all causative bacteria were put under surveillance through an updated questionnaire including complementary information about confirmed cases and different of those routinely collected, remaining as the national data source for the National Program for Control and Prevention of the Neurological Infectious Syndrome (NPCPNIS) [ 16].
In order to update the questionnaire, a panel of five experts in health promotion was assembled from PHC professionals (family doctors and nursing personnel), epidemiologists, psychologists and sociologists.
Updating the questionnaire was undertaken using an iterative process.
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