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Table 3: CPS - SIPP Comparison Table Workers (Ages 19-64, not self-employed) Calendar Year 2001
	CPS		SIPP Point in Time		SIPP All Year		SIPP Ever During Year
Characteristic	Number (Millions)	Uninsured Rate	Number (Millions)	Uninsured Rate	Number (Millions)	Uninsured Rate	Number (Millions)	Uninsured Rate
TOTAL	20.9	16.4%	20.3	15.6%	10.2	7.8%	30.9	23.7%
GENDER
Men	12.0	18.2%	11.5	17.6%	6.1	9.3%	16.8	25.8%
Women	8.8	14.4%	8.8	13.5%	4.2	6.4%	14.1	21.6%

AGE
ADULTS Age 19-64	20.9	16.4%	20.3	15.6%	10.2	7.8%	30.9	23.7%

Age 19-24	5.1	27.9%	5.1	27.5%	2.2	12.0%	7.6	41.6%
Age 25-34	6.5	20.8%	6.1	19.0%	3.0	9.2%	9.7	30.0%
Age 35-54	7.8	12.3%	7.9	12.2%	4.3	6.6%	11.8	18.2%
Age 55-64	1.5	10.1%	1.2	8.3%	0.7	4.9%	1.7	11.7%

RACE
White*	16.1	15.3%	15.7	14.7%	8.1	7.5%	23.6	22.0%
Black**	3.3	21.7%	3.4	20.8%	1.6	9.8%	5.4	32.9%
Asian/Pacific Islander	1.1	18.5%	0.8	14.4%	0.4	6.8%	1.3	24.8%
American Indian	0.4	30.8%	0.4	27.4%	0.2	10.6%	0.6	38.6%

HISPANIC ORIGIN
Hispanic	6.2	38.5%	6.1	37.7%	3.7	22.9%	8.3	51.3%
Not Hispanic	14.7	13.2%	14.3	12.5%	6.5	5.7%	22.7	19.8%

IMMIGRANT STATUS
US Native	14.7	13.4%	11.6	11.2%	5.8	6.0%	18.8	18.4%
Immigrant citizen	1.2	18.8%	0.8	14.0%	0.4	8.1%	1.4	23.7%
Immigrant non-citizen	4.9	42.7%	3.5	37.7%	2.3	26.7%	4.8	51.6%

EDUCATION
Less than HS	5.9	42.6%	5.8	41.3%	3.4	24.4%	7.8	55.7%
HS only	7.6	19.3%	7.6	19.6%	3.9	10.0%	11.3	28.9%
Some post-HS	5.0	13.1%	5.3	12.4%	2.4	5.5%	8.8	20.5%
4-year college degree or more	2.3	6.5%	1.6	4.6%	0.5	1.5%	3.0	8.8%

INDIVIDUAL WORK STATUS (Annual)
EMPLOYED FULL YEAR	13.7	13.8%	6.2	8.3%	3.4	4.6%	9.3	12.4%

Full time	11.5	12.9%	5.5	7.8%	3.0	4.3%	8.4	11.9%
Part time	2.2	21.9%	0.7	15.4%	0.4	8.4%	1.0	20.0%

EMPLOYED PART YEAR	7.2	25.2%	14.1	25.5%	6.8	12.3%	21.6	39.0%

Full Time	5.0	26.1%	7.0	25.6%	2.9	10.8%	11.1	40.7%
Part time	2.2	23.5%	7.1	25.3%	3.9	13.7%	10.5	37.3%

FAMILY WORK STATUS
2 or more full time	6.1	12.6%	5.7	11.0%	3.1	5.9%	9.1	17.4%
Only 1 full time	9.9	15.7%	9.4	14.7%	4.8	7.6%	14.7	23.2%
Only part time	2.6	29.3%	2.4	32.9%	1.2	16.3%	3.3	44.9%
Only self employed	0.3	23.4%	0.3	34.5%	0.2	26.5%	0.3	42.4%
No Workers	2.1	31.9%	2.5	39.1%	0.9	14.7%	3.4	53.6%

WAGE/SALARY FOR PRIMARY EARNERS
No wage earner	0.0	82.1%	1.3	34.9%	0.5	14.2%	1.8	47.8%
Under $7/hour	4.7	44.6%	2.7	42.7%	1.6	25.4%	3.5	55.9%
$7-$15/hour	10.0	23.2%	11.7	23.3%	6.1	12.1%	17.7	35.3%
$15-$25/hour	4.0	9.6%	3.1	7.9%	1.3	3.3%	5.3	13.5%
More than $25/hour	2.2	6.8%	1.5	5.0%	0.7	2.4%	2.6	8.4%

FAMILY COMPOSITION
WITH CHILDREN	9.0	15.3%	7.8	14.2%	4.3	7.8%	11.9	21.8%

1 Adult	1.9	22.4%	1.5	21.0%	0.7	9.6%	2.4	33.8%
2 Married adults	5.2	11.6%	4.5	10.7%	2.5	6.1%	6.8	16.4%
Other	1.9	34.0%	1.8	31.4%	1.0	18.2%	2.6	46.1%

WITHOUT CHILDREN	11.9	17.3%	8.2	13.2%	4.3	6.9%	13.1	21.1%

1 Adult	5.3	20.3%	4.4	18.0%	2.4	9.6%	7.0	28.2%
2 Married adults	4.3	12.4%	2.3	7.5%	1.2	3.9%	3.8	12.3%
Other	2.3	29.2%	1.5	22.3%	0.7	11.0%	2.3	35.5%

INCOME (Poverty Level)
Under 100% FPL	3.4	48.8%	3.5	43.9%	2.0	25.2%	5.1	63.7%
100 - 200 % FPL	6.3	36.2%	7.4	37.2%	4.0	20.1%	10.4	52.5%
200 - 300% FPL	4.2	20.1%	4.9	19.5%	2.4	9.6%	7.5	30.1%
300 - 400% FPL	2.7	13.0%	2.4	10.8%	1.1	5.1%	4.0	18.0%
More than 400% FPL	4.3	7.0%	2.1	3.9%	0.7	1.2%	3.8	6.9%

*Includes both Hispanic and Non Hispanic

The CPS estimates are based on ERIU tabulations of data collected by the U.S. Census Bureau in the Current Population Survey (CPS) Annual Social and Economic Supplement, conducted in March of 2002. CPS estimates of the uninsured are intended to represent persons who are uninsured throughout calendar year 2001. A person is considered insured if they were covered at any time during that calendar year; individuals insured for only one month are counted as insured. CPS estimates of the uninsured should be interpreted with caution. Respondents are asked to report on a time period that begins roughly 15 months prior to the time of the interview. Some respondents are likely to have trouble remembering back this far, while others may be confused by the time frame and respond instead about current coverage status. Studies that have examined and compared CPS estimates with data from other surveys suggest that CPS estimates of the uninsured are much closer to "point in time" than true full-year estimates.

The SIPP estimates are ERIU tabulations of data collected by the U.S. Census Bureau in the Survey of Income and Program Participation (SIPP) 2001 panel, which began in January 2001. The SIPP interviews respondents every four months over a period of roughly 4 years. The 2001 tabulations are based on responses to the first three interviews (waves) of the 2001 panel, covering a 12-month period that corresponds with calendar year 2001 for one of the four rotation groups. Respondents report whether they were covered by specific sources of public or private health insurance (Medicare, Medicaid, SCHIP, other public, employment-based private, other private health insurance). Respondents are considered uninsured if they respond "no" to all of the coverage options; they are not asked directly if they are uninsured. Respondents are considered uninsured if they respond "no" to all of the coverage options; they are not asked directly if they are uninsured. The "point in time" estimate reflects health insurance status in the 12th survey month. The "all year uninsured" estimate includes those without health insurance for all 12 months. The "ever uninsured" includes those reporting no health insurance for at least one month and for as many as 12 months.

For further discussion of issues related to counting the uninsured see "Counting and Characterizing the Uninsured," (Adobe PDF) by Pamela Farley Short, and ERIU Research Highlight 1: A Revolving Door: How Individuals Move In and Out of Health Insurance Coverage (Adobe PDF)

Notes on CPS Data Source and Variables (PDF)
Notes on SIPP Data Source and Variables (PDF)