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. 2011 Sep 26;10:51. doi: 10.1186/1476-072X-10-51

Table 4.

Simple test for non-stationarity.

Parameters 2* S.E. (Global) Inter-quartile range (Local) Stationary or non-stationary variable
Intercept 0.06 0.46 Non-stationary

Proportion of lower social grade (G4 + G5) population 0.18 1.05 Non-stationary