Yang, Fan; Zubizarreta, José R.; Small, Dylan S.; … - In: The American Statistician 68 (2014) 4, pp. 253-263
An instrument or instrumental variable is often used in an effort to avoid selection bias in inference about the effects of treatments when treatment choice is based on thoughtful deliberation. Instruments are increasingly used in health outcomes research. An instrument is a haphazard push to...
