Sentence examples for existed in a cohort from inspiring English sources

Missing data existed in a cohort study.

In addition, it was inevitable that missing data existed in a cohort study.

Wojcik et al (2010) randomly selected and sequenced 28 UCRs in Caucasians and identified 4 UCRs harboured sequence variations in 35 CRC patients, but none of them existed in a cohort of 175 cancer-free control.

But conflicting data also exist: in a cohort of 17 592 Japanese between 40 and 65 years of age, investigators observed that dietary magnesium intake was inversely associated with diabetes incidence in both genders [ 28].

Only one similar study exists in a cohort of children, which, consistent with our findings, showed asthma development only in children living in areas with high ozone concentrations, and not in those living in areas with low ozone (McConnell et al. 2002).

Unmeasured confounders may exist in a retrospective cohort study.

Soccer existed in a similar vacuum.

Of course, we cannot ensure that other unmeasured confounders did not exist, as they may exist in all cohort studies.

In this structure, colliding bias is blamed on the induced path E 0--B → D 1. Notice that both Diagram A and Diagram B can exist in a single prospective cohort.

Since the Bcl-2/Bax ratio and the Bcl-XL/Bax ratio has been shown to associate with survival outcomes in OSCC and other cancers [ 26], we examined if a similar association existed in our OSCC cohort using automated quantitative IHC analysis.

This study has two objectives: First, to determine whether educational inequalities for overall and site specific cancer incidence still exist in a large prospective US cohort; second, to investigate whether smoking and other lifestyle factors account for the observed (unadjusted) inequalities.