Results 271 to 280 of about 3,675,438 (280)

Internal and External Validity

2020
exaly  

No external validity without internal validity

Journal of Clinical Epidemiology
Rafael Leite Pacheco, Leonardo Y. Kasputis Zanini, Diego Adão, Rachel Riera   +3 more
openaire   +1 more source

Threats to Internal Validity

2017
Michelle Newhart, Mildred L. Patten
openaire   +1 more source

Internal Validity

2013
openaire   +1 more source

Internal and External Validity and Threats to Validity

2018
openaire   +1 more source

Internal and External Validity

2011
openaire   +2 more sources

Internal Validity, Types of

2009
openaire   +1 more source

Validity, External/Internal

2010
openaire   +1 more source

Internal and External Validity

2019
openaire   +1 more source

Threats to Internal Validity

2016
openaire   +1 more source