Table 1.

Univariate Effect of Patient Demographic and Hospital Characteristics on the Rate of Posttraumatic Hydrocephalus

Characteristic	N	Hydrocephalus, n (%)	P Value
Total (N)	1,244,087	930 (0.07)
Age group			<0.0001
0–5 years	193,444	326 (0.17)
6–10 years	181,401	162 (0.09)
11–15 years	418,784	207 (0.05)
16–20 years	450,459	235 (0.05)
Gender			0.2739
Male	790,163	627 (0.08)
Female	453,708	302 (0.07)
Payer			<0.0001
Medicaid	364,119	437 (0.12)
Private	711,005	369 (0.05)
Self-pay	93,755	54 (0.06)
Other	70,925	66 (0.09)
Income			0.0006
$1–$41,999	272,316	191 (0.07)
$42,000–$51,999	302,535	343 (0.11)
$52,000–$67,999	304,768	216 (0.07)
≥$68,000	343,226	169 (0.05)
Hospital location			<0.0001
Rural	233,092	23 (0.01)
Urban	1,010,996	907 (0.09)
Hospital teaching status			<0.0001
Nonteaching	696,669	178 (0.03)
Teaching	547,419	752 (0.14)
Hospital trauma status			<0.0001
Not trauma center	553,780	180 (0.03)
Trauma center	669,026	698 (0.1)