This, in turn, affects the feasibility of your study. Excluding anyone who is using any type of medication-be it painkillers, birth control, or antidepressants-makes recruitment of study participants for your sample difficult. There are many forms of medication, and some surely will not interfere with your study results. Specifying the time frame ensures that the condition (insomnia) is more likely to be stable throughout the study.īad example: “Subjects will be excluded from the study if they are taking medications.” Here, the diagnosis and symptoms are clear. Good example: “Subjects will be included in the study if they have been diagnosed with insomnia by a physician and have had symptoms (i.e., trouble falling and/or staying asleep) for at least 3 nights a week for a minimum of 3 months.” How are you going to establish that participants have insomnia? Here are some examples of effective and ineffective ways to phrase your criteria:īad example: “Subjects will be included in the study if they have insomnia.” Example: Inclusion and exclusion criteriaLet’s say you are studying the effect of a relaxation therapy on women with insomnia. It is important that researchers clearly define the appropriate inclusion and exclusion criteria prior to recruiting participants for their experiment or trial. This means that they can’t participate in the study even if they meet the inclusion criteria.Įxamples of inclusion and exclusion criteria People who meet one or more of the exclusion criteria must be disqualified.
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