The coefficient of exposure to real estate development is (-0.10) (0.06), shown in Table 7 Table 7 Did firms reshuffle their debt portfolios?
Figure 2 shows that the coefficient of exposure to real estate development in 1995 1997 was basically zero prior to 2009 but turned negative in that year and in 2010.
If the variable of interest (say "exposure") varies over strata then the coefficient of exposure in the random effects model will have greater precision that that from the fixed effect (i.e. conditional Poisson) model.
Covariates were kept in the model if they changed the coefficient of exposure (H. pylori infection) by > 10%% or if they were independently associated with the outcome at p < 0.10.
We selected potential confounders for the multivariate models based on associations reported in the literature, and we included in the models those that changed the coefficient of exposure by 10% or more.
Regression coefficients of these exposure biomarkers except bisphenol A remained significantly in the multiple regression models after controlling for age, sex, weight, smoking, and exercise for at least one of the two oxidative stress biomarkers (P < 0.05).
Odds ratios of the interaction effect were computed based on the sum of coefficients of the exposure categories and the interaction term.
Covariate-adjusted regression coefficients of NO2 exposure for different indices of HRV are given in Table 2 [crude regression coefficients are presented in Supplemental Material, Table 1 (http://www.ehponline.org/members/2008/11377/suppl.pdf)].
Given the exploratory nature of this study, a significance level of 0.05 was used to test the significance of the regression coefficients of the exposure variables; no adjustments for multiplicity were applied.
The results from this sensitivity analyses showed that the combined coefficients of endotoxin exposure and for early life dog ownership are statistically significant when excluding LISA from the meta-analyses but not significant when excluding PIAMA or INMA.
