Table II.

Descriptive Characteristics for psychological distress and health insurance status among U.S. adults 18-64 years (unweighted n=202,663)

	Mean	%	(SE)	n
Psychological distress
K6 scale (range: 0-24)a	2.5	---	(0.01)	202,663
During the past 30 days, how often did you feel (range: 0-4)
So sad that nothing could cheer you up	0.4	---	(<0.01)	202,663
Nervous	0.6	---	(<0.01)	202,663
Restless or fidgety	0.6	---	(<0.01)	202,663
Hopeless	0.2	---	(<0.01)	202,663
That everything was an effort	0.5	---	(<0.01)	202,663
Worthless	0.2	---	(<0.01)	202,663
Health insurance status
Coverage typeb
Private	---	70.5	(0.21)	134,966
Public/other	---	10.9	(0.13)	26,580
No coverage	---	18.5	(0.15)	41,117
Recent (≤1 year) change in status
Yes	---	9.2	(0.09)	19,498
No	---	90.8	(0.09)	183,165
Coverage type and Recent (≤1 year) change in status
Private coverage, experienced a recent change	---	3.3	(0.05)	6,745
Public/other coverage, experienced a recent change	---	1.3	(0.03)	2,955
No coverage, experienced a recent change	---	4.6	(0.06)	9,798
Private coverage, did not experience a recent change	---	67.2	(0.22)	128,221
Public/other coverage, did not experience a recent change	---	9.7	(0.12)	23,625
No coverage, did not experience a recent change	---	13.9	(0.13)	31,319

Data source: National Health Interview Survey, 2001-2010.

n = unweighted frequency; SE = standard error; --- = not applicable.

^aUnweighted sample estimates for the K6 scale include a mean score of 2.6, SE of 0.01, and standard deviation of 3.99.

^bPercents do not add to 100.0% due to rounding.