TABLE 3—

Ordinary Least Squares and Fixed-Effects Regressions of Logged Zip Code–Level Mortgage Default Rates on Logged Metropolitan Statistical Area–Level Influenza Severity: United States, 2004–2012

Search/Delinquency Rate	Ordinary Least Squares Regression Models,a b (95% CI)	Zip Code–Quarter Fixed-Effects Models,b b (95% CI)
Logged influenza searches
30-d	−0.000 (–0.002, 0.002)	0.001 (-0.001, 0.003)
60-d	0.003*** (0.001, 0.005)	0.001* (0.001, 0.001)
90-d	0.003*** (0.001, 0.005)	0.001*** (0.001, 0.001)
Any	0.002 (0.000, 0.003)	−0.000 (–0.002, 0.002)
Constant
30-d	−0.148*** (–0.207, −0.089)	0.105*** (0.091, 0.119)
60-d	−0.167*** (–0.198, −0.136)	0.026*** (0.018, 0.034)
90-d	−0.129*** (–0.149, −0.109)	0.007*** (0.001, 0.012)
Any	−0.351*** (–0.433, −0.269)	0.157*** (0.139, 0.175)

Note. CI = confidence interval. Standard errors are corrected for clustering.

^a205 352 observations (9128 unique zip codes), with metropolitan statistical area and zip code level control variables.

^b291 488 observations (9197 unique zip codes), without metropolitan statistical area and zip code level control variables.

*P < .05; **P < .01; ***P < .001.