TY  - JOUR
PY  - 1978//
TI  - Studying categorical data over time
JO  - Social science research
A1  - Davis, James A.
SP  - 151
EP  - 179
VL  - 7
IS  - 2
N2  - A review of recently developed simple techniques for analyzing data in the form of proportions from replicated, cross-sectional, sample surveys. (A) One variable over time--tests for homogeneity, pooling homogeneous proportions, tests for linear trends with as few as three time points, tests for departures from linearity; (B) Two variables with a constant percentage difference--four fold tables as rudimentary causal models, decomposing change with linear flow graphs; (C) Extension of the flow graph techniques to--three or more variables and changing coefficients; (D) Comments implying panel designs are somewhat over-rated and successive cross-sections somewhat under-rated.<p /> 
LA  - en
SN  - 0049-089X
UR  - http://dx.doi.org/10.1016/0049-089X(78)90009-1
ID  - ref1
ER  -