Table 1.

The estimates (Est), standard errors (SE) and Est/SE (Z) in the case study.

		Intercept	Caffeine	Negative	Positive	Gender	Race	Age
Relative	Est	2.568	0.606	0.026	0.214	0.458	0.242	-0.083
surge	SE	0.188	0.189	0.149	0.121	0.173	0.179	0.149
rate ${\beta }_1^{\ast }$	Z	13.669	3.203	0.176	1.773	2.649	1.349	-0.557
Daytime	Est	0.377	0.025	0.106	-0.014	0.206	-0.163	0.110
equilibrium	SE	0.049	0.030	0.058	0.044	0.043	0.056	0.045
${\beta }_2^{\ast }$	Z	7.624	0.827	1.839	-0.324	4.777	-2.944	2.414
Daytime	Est	1.621	-0.203	-0.196	-0.181	-0.238	-0.034	0.157
instability	SE	0.142	0.082	0.126	0.126	0.135	0.159	0.130
${\beta }_3^{\ast }$	Z	11.445	-2.480	-1.555	-1.438	-1.758	-0.212	1.212
Relative	Est	2.737	0.326	0.002	0.236	0.269	0.632	0.184
dipping	SE	0.262	0.342	0.193	0.156	0.224	0.258	0.220
rate ${\beta }_4^{\ast }$	Z	10.448	0.954	0.010	1.518	1.200	2.447	0.837
Nighttime	Est	-1.206	0.168	0.067	-0.013	0.298	-0.109	0.147
equilibrium	SE	0.115	0.063	0.075	0.084	0.073	0.106	0.072
${\beta }_5^{\ast }$	Z	-10.459	2.678	0.886	-0.159	4.081	-1.024	2.027
Nighttime	Est	1.135	0.702	0.286	-0.030	0.060	-0.113	-0.001
instability	SE	0.214	0.477	0.182	0.101	0.134	0.146	0.133
${\beta }_6^{\ast }$	Z	5.299	1.473	1.573	-0.295	0.448	-0.772	-0.006
ψ	Est	2.992	SE	0.114