A variation on single-stage cluster sampling used in a survey of elderly people in Shanghai.
Levy
P S
PS
Yu
E S
ES
Liu
W T
WT
Zhang
M Y
MY
Wang
Z Y
ZY
Wong
S C
SC
Katzman
R
R
D000368:Aged; D002681:China; D003430:Cross-Sectional Studies; D003704:Dementia / Q000453:epidemiology*; D006306:Health Surveys; D006801:Humans; D008875:Middle Aged; D012107:Research Design; D013029:Space-Time Clustering