selectieuitval
Selectieuitval, also known as selection bias, is a type of bias that occurs when the selection of participants in a study is not random, leading to a sample that is not representative of the population. This can result in conclusions that are not generalizable to the broader population. Selection bias can arise from various sources, including self-selection, where individuals choose to participate based on their own preferences or characteristics, and non-response bias, where certain groups are less likely to respond to a survey or participate in a study.
There are several types of selection bias, including:
1. Volunteer bias: Participants who volunteer for a study may differ from those who do not, leading
2. Healthy volunteer effect: In medical research, volunteers may be healthier than the general population, leading
3. Attrition bias: Participants who drop out of a study may differ from those who complete it,
4. Time interval bias: Studies that occur over a specific time period may not capture the full
To mitigate selection bias, researchers should aim to use random sampling techniques to ensure that the sample