TY  - JOUR
T1  - EFfect of preventive supplementation on young children in niger
AU  - Ghosh D
Y1  - 2009/06/03
N1  - 10.1001/jama.2009.740
JO  - JAMA
SP  - 2208
EP  - 2209
VL  - 301
IS  - 21
N2  - 
There are 2 levels of correlation in the study that need to be accounted for in the analysis. The first is that the children were clustered within households. This is shown in Figure 1 of the article, which indicates 1671 children from 647 households in the intervention group and 1862 children from 760 households in the control group. This leads to use of mixed-effects models in which correlation is accounted for at the village, household, and individual levels.

SN  - 0098-7484
M3  - doi: 10.1001/jama.2009.740
UR  - http://dx.doi.org/10.1001/jama.2009.740
ER  -