Table 4.

Adjusted prevalence rate ratios (aPRRs) for lifetime concussion/head injury among children 3–17 y by sociodemographic characteristics

	2016 NSCH		2016 NHIS
	n = 41,226		n = 8725
	aPRR	95% CI	aPRR	95% CI
Overall
Age
3–5 y (referent)	1.00		1.00
6–8 y	1.81	1.05–2.56	1.45	0.99–2.14
9–12 y	2.26	1.46–3.06	1.50	1.05–2.16
13–15 y	4.69	3.10–6.28	2.14	1.53–3.00
16–17 y	5.67	3.74–7.61	3.19	2.27–4.48
Sex
Male (referent)	1.00		1.00
Female	0.69	0.58–0.80	0.69	0.57–0.83
Race/ethnicity
White, non-Hispanic (referent)	1.00		1.00
Hispanic	0.63	0.44–0.82	0.66	0.49–0.90
Black, non-Hispanic	0.58	0.39–0.77	0.51	0.36–0.73
Other, non-Hispanic	0.63	0.44–0.82	0.49	0.35–0.69
Current health insurance status
Private (referent)	1.00		1.00
Public	0.95	0.69–1.21	1.26	0.96–1.66
Other	0.87	0.44–1.30	1.55	0.83–2.89
Uninsured	0.88	0.44–1.32	1.58	1.02–2.44
Household income
<100% FPL	0.90	0.55–1.26	0.97	0.67–1.40
100%–199% FPL	0.83	0.57–1.09	0.91	0.66–1.27
200%–399% FPL	0.91	0.72–1.09	0.79	0.62–1.01
≥400% FPL (referent)	1.00		1.00
Parental education attainment
Less than high school	0.63	0.18–1.07	0.87	0.59–1.29
High school diploma	0.68	0.49–0.88	0.87	0.64–1.18
Some college	0.86	0.68–1.04	1.19	0.93–1.51
College degree or higher (referent)	1.00		1.00
Household primary language*
English (referent)	1.00		1.00
Non-English	0.32	0.14–0.49	1.07	0.68–1.69

Bolded values indicate statistical significance. FPL is federal poverty level.

^*In the NSCH, household primary language was assessed with the survey item “What is the primary language spoken in the household?” In the NHIS, this was approximated by the language the interview was conducted in. In the MTF, this was ascertained by asking “What was the first language you spoke when you were a child?”