Ethics in Research
Reliability and Validity
Purpose of Health Records I
Random and Systematic Errors
Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches
Systematic Error: Methodological and Sampling Errors
You might also read
Articles linked to this work by shared authors, journal, and citation graph.
Updated: Feb 20, 2026

Qualitative and Quantitative Validation of Tools with Rating Scales Aimed at Assessing the Quality of University Service-Learning
Published on: August 29, 2025
I Garcia-Doval1,2, E J van Zuuren3, F Bath-Hextall4
1Research Unit, Fundación Piel Sana AEDV Madrid, Ferraz 100, 1° izda, Madrid, Spain.
No abstract available in PubMed .