•Reliability:
It is the ability to reproduce a consistent result in time and space, or
from different observers
•Validity:
It refers to the fact that a tool measures exactly what it proposes to
measure
PSM / COMMUNITY MEDICINE by Dr Abhishek Jaiswal is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Based on a work at learnpsm@blogspot.com.
Permissions beyond the scope of this license may be available at jaiswal.fph@gmail.com.
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