Among the limitations, first, hospitalizations in private hospitals were not included, and even though we excluded populations with private insurance, we could not exclude patients with a double insurance.
Before: Snapchat has viewed itself as a cool app for teens that could be turned off if adults signed up, even though this excludes a massive potential audience.
This holds even though we exclude the newborns.
Finally, our selection globally looks like that of Horrocks et al. [ 9], even though we excluded a few proteins and included several additional ones.
The statistics were still significant even though we excluded 21 patients with primary HIV infection who supposedly had an initially high baseline viral load.
But even remembering these events might pose a problem in some of the patients with central degenerative diseases, which might have been a relevant factor in our study, even though we excluded patients with severe dementia.
Even though we excluded the first year of follow-up, we may not have avoided this possible confounding by indication, as some of these cancers may present with long periods with uncharacteristic symptoms before diagnosis.
We were not very restrictive in our inclusion criteria with regard to types of studies as we planned to include cluster-randomised studies even though we excluded quasi-randomised studies.
First, even though we excluded NOK interview data from our analyses, our data on family history were reported by study participants rather than by family member themselves; therefore they may be subject to recall bias, under-ascertainment of family history, and misclassification of the primary tumor site.
53 It is also possible that individuals with primary biliary cirrhosis, autoimmune hepatitis or other forms of liver dysfunction (eg, haemochromatosis and Wilson disease) were included in the present study, even though we excluded subjects with elevated hepatic enzymes (≥150 IU/ml).
