Exact(9)
This lead term serves as a proxy for the next day's market wide liquidity, and may be used as an expected value for liquidity on the following day.
The J -test: Then test the probability of the predicted lead term and the original lead term in the two artificial regressions above.
Table 3 shows the same spline-fit model as Table 2, but the natural-log lead term is substituted for the linear lead term.
The IQ multiple regression model was also respecified with a linear lead term.
Test models (data not shown) without this variable calculated age coefficients and standard errors 1.5 2 times and 1 2 times, respectively, higher than the age coefficients and standard errors calculated with the nested air lead term in the model.
We also evaluated this cadmium quartile trend variable in the fully adjusted models (with the sex or blood lead term removed) within strata defined by sex or blood lead level (above/below median).
Similar(49)
If lead terms (i.e., prior to 1994) are statistically significant, the common trend assumption is in doubt.
The results of the market regression model with concurrent, lagged, and lead terms are reported in Panel C of Table 7.
We constructed alternative linear multiple regression models with linear blood lead terms (linear linear dose response) and natural-log transformed blood lead terms (log-linatural-log transformed
We refit the mixed models with linear lead terms and used the J-test (MacKinnon 1981) to determine if the logarithmic specification of the lead variables produced a better fit to the data than a linear lead specification.
Coefficients for the ApoE and tibia lead interaction term were negative in 19 of the 20 regression models.
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