Table 2.

Longitudinal and multivariate Poisson and negative binomial regression analyses of Time 1 factors predicting novel cases of Time 2 GAD severity and diagnosis by removing participants at Time 1 who met clinical GAD (n = 2605)

	Time 2 GAD Severity					Time 2 GAD Diagnosis
			95% CI					95% CI
Time 1 Predictors	β	IRR	Lower	Upper	p	β	OR	Lower	Upper	p
Intercept	−4.73					−4.72
General cognitive ability z-score	−0.57	0.57	0.36	0.88	0.012	−0.55	0.58	0.37	0.90	0.015
Age	−0.03	0.97	0.93	1.02	0.210	−0.03	0.97	0.93	1.02	0.232
Female gender	0.57	1.77	0.68	4.66	0.245	0.56	1.74	0.65	4.64	0.266
Level of education	0.02	1.02	0.85	1.22	0.841	0.01	1.01	0.85	1.21	0.895
GAD severity	1.51	4.53	1.72	11.92	0.002	1.64	5.13	1.75	15.03	0.003
Major depression severity	0.17	1.19	1.02	1.39	0.031	0.18	1.19	1.02	1.40	0.032
Panic disorder severity	0.34	1.40	1.13	1.74	0.002	0.35	1.42	1.13	1.78	0.002
Hypertension medication use	0.35	1.41	0.53	3.80	0.495	0.38	1.47	0.52	4.11	0.468
Diabetes mellitus medication use	0.89	2.43	0.31	19.00	0.397	0.88	2.42	0.30	19.49	0.406
Exercise status	−0.10	0.90	0.65	1.26	0.543	−0.12	0.89	0.63	1.24	0.490
Body mass index	−0.01	0.99	0.93	1.06	0.853	0.00	1.00	0.93	1.07	0.942
Sense of control	−0.33	0.72	0.51	1.03	0.074	−0.34	0.72	0.49	1.04	0.076

GAD, generalized anxiety disorder; IRR, incidence risk ratio

Note: Gender was coded as 1 = male and 2 = female. Education level ranged from 1 = no school/ some grade school to 12 = medical, law, or doctoral degree. Hypertension and diabetes mellitus medication use were coded as 1 = yes and 2 = no. Exercise status was coded from 1 =yes and 2 = no. Overall model statistic were χ²(13) = 50.24, p < 0.0001 (GAD severity) and χ²(13) = 49.36, p < 0.0001 (GAD diagnosis). Text in bold denote findings which are statistically significant.