Table 4:

Odds Ratios of Having Frequent Headaches/Migraines at Baseline for Posttraumatic Stress Disorder (PTSD) Symptom Scores and Covariates

Variable	Odds ratios of having frequent headaches/migraines at baseline
	Model 1a		Model 2b
	OR	95% CI	OR	95% CI
Impact of Event Scale Avoidance score	.87	[.59, 1.30]
Impact of Event Scale Hyperarousal score	1.54	[.92, 2.56]
Impact of Event Scale Intrusion score	.71	[.41, 1.21]
Impact of Event Scale total score (transformed to 0–4 scale)			.96	[.72, 1.29]
Household received food stamps at baseline	1.11	[.60, 2.05]	1.07	[.58, 1.96]
Household received cash assistance/welfare at baseline	1.39	[.63, 3.03]	1.39	[.64, 3.05]
Household received unemployment benefits at baseline	.55	[.12,2.48]	.57	[.13,2.55]
Race/ethnicity (Non-Hispanic White = reference)
Non-Hispanic Black	.61	[.26, 1.44]	.62	[.26, 1.45]
Hispanic	1.63	[.33,8.01]	1.83	[.38, 8.83]
Other race/ethnicity	2.26	[.44, 11.56]	2.26	[.44, 11.49]
Age in years	1	[.93, 1.06]	1	[.94, 1.06]
Home flooding depth (inches)	.96	[.83, 1.10]	.96	[.84, 1.10]

Note. OR = odds ratio; CI = confidence interval.

^aPTSD symptoms represented by cluster scores, whole sample included (n = 409).

^bPTSD symptoms represented by total score, whole sample included (n = 409).

^*p < .05.

^**p < .01.

^***p < .001.