Planning a longitudinal study. II. Frequency of measurement and study duration
J Chronic Dis
.
1973 Sep;26(9):561-70.
doi: 10.1016/0021-9681(73)90061-1.
Author
J J Schlesselman
PMID:
4759581
DOI:
10.1016/0021-9681(73)90061-1
No abstract available
MeSH terms
Age Factors
Humans
Research Design / standards*
Statistics as Topic
Time Factors