General linear mixed models testing fixed and random predictors of recovery of P. putida group strains, P. fluorescens group strains, and their relative recovery, across samples taken from outdoor sites from all homes.

a models recovery of P. putida group; includes all samplings of all houses.b models recovery of P. fluorescens group. Interactions involving house excluded due to failure of model convergence. One house, two summer sampling periods and one spring sampling period excluded due to absence of any outdoor P. fluorescens group recovery.c models recovery of P. putida group vs. P. fluorescens group, given that one of the two was recovered. Two houses, one spring, one summer and one fall sampling period excluded due to absence of any samples from which a P. putida or P. fluorescens group isolate was recovered.ǂ DF indicates degrees of freedom, denominator DF for F test is estimated using the Residual DF method.§ The fixed effects are tested with an approximate F test. The random effects are tested using Wald Z tests.# The effect of season is tested using a joint test for the six pairwise comparisons among seasons, using linear combinations of the least squares meansNS p>0.1+ 0.05* 0.01** 0.001*** pGeneral linear mixed models testing fixed and random predictors of recovery of P. putida group strains, P. fluorescens group strains, and their relative recovery, across samples taken from outdoor sites from all homes.