We suggest that caution is warranted, and further study is required to determine the significance of the markedly different outcomes observed using the two survey time frames.
Single time-point fish intake data appear to be adequate for deriving guidance, but caution is warranted, as study is required to determine the significance of the different outcomes observed using the two survey time frames.
Possible reasons for this include use of different classification manuals (ICD-10 vs. DSM-IV), differences in setting, different survey time frames, confusion of major and minor psychological and psychiatric disorders and stresses, raters' different clinical experiences as well as different expectations, and differences in patients' or experts' perspectives.
Only a small number of callers selected the one-call program, and only 98 completed a follow-up survey (2.9% of all completed surveys) during the study time frame.
Because our method of data collection is continuous and ongoing, the length of our study time frame likely has no survey-based equivalent.
Study size, funding source(s), randomised trials identified, longitudinal study time frames, survey response rates, and accurate description (compared with the abstract) of study exposure and outcome.
All nursing staff (n = 1830) working in the medical, surgical and geriatric units (n = 66) in the study hospitals during the four-week survey distribution time frame were invited to complete the questionnaire.
In the original MIDUS survey, the time frame for inquiring about MD symptoms was the previous 12 months, while in the follow-up MIDUS survey, MD items inquired about the past 5 years to capture all depressive episodes during follow-up.
We are concerned that different survey recall time frames may have affected the measured consumption rates, and we conclude that data derived using a short recall time period may produce intake values that do not represent average exposure levels for the population or group studied.
After considering these factors, along with weather conditions, equipment availability, and other potential 2011 R/V Langseth surveys, the April May time frame was selected as the optimum survey time.
