Table 3.

Fixed effects results for optimal number of cases linear mixed effects model.

Effect	Coefficient	Standard error	Confidence interval
Intercept	−1.35	2.56	−6.37, 3.67
Date	7.61	0.21	7.19, 8.03
Poverty index	0.93	1.49	−1.98, 3.85
Date*poverty index	1.22	0.14	0.94, 1.50