A (cohort study) may test an association.Logical formLearned from2 sentences. A (cohort study) can be strong.Logical formLearned from2 sentences. A cohort can be constituted-of-or-filled-with (stroke patients).Logical formLearned from2 sentences. A pattern may reflect a size of a cohort.Logical formLearned from2 sentences. Cohorts can be slimy.Logical formLearned from2 sentences. Teachers can be from a cohort.Logical formLearned from2 sentences. Cohorts can be at a level.Logical formLearned from2 sentences. Some districts can be with cohorts.Logical formLearned from2 sentences. (Skin test conversions) can be among a cohort of some new employees.Logical formLearned from2 sentences. Studies may pertain-to a (survivor cohort).Logical formLearned from2 sentences. Risks may be estimated from a cohort.Logical formLearned from2 sentences. Exposures can be from a cohort.Logical formLearned from2 sentences. (Exposure data) can be for cohorts.Logical formLearned from2 sentences. A subset may pertain-to (cohort data).Logical formLearned from2 sentences. A (risk result) may be determined from a subset of (cohort data).Logical formLearned from2 sentences.