Analysis of Children's Health Insurance Patterns: Findings from the SIPP. b. Medicaid

05/12/1999

Table 10 shows for each month from October 1992 through August 1994 the number of children under 19 who were enrolled in Medicaid, a percentage breakdown of the types of coverage they had in the next month, the number of children leaving Medicaid in the next month, and a percentage distribution of the type of coverage that followed Medicaid. Average monthly transitions are reported at the bottom of the table. On average about 4 percent of Medicaid enrollees under 19 years of age or more than half a million children (555,000) left Medicaid each month. Of these, 56 percent became uninsured while about 37 percent acquired another form of insurance and 7 percent left the survey universe or aged out of the population of children under 19.

Table 11 reports monthly transitions into Medicaid. Of the 583,000 entering Medicaid each month, on average, just over half or 53 percent were previously uninsured, 34 percent had employer- sponsored or other insurance coverage, and 14 percent were either new to the survey universe or returning to the survey universe. In fact, virtually all if not all of those entering the survey universe were newborn children who were enrolled in Medicaid at birth (an extension of their mothers’ coverage in pregnancy, no doubt). The size of this group reflects both the high rate of Medicaid coverage among infants and the disproportionately large share of the Medicaid population that infants represent.

TABLE 10: CHILDREN UNDER 19 ENROLLED IN MEDICAID BY INSURANCE STATUS IN NEXT MONTH: FY 1993 and 1994
    Type of Coverage in Next Month   Type of Coverage in Next Month Among Children Who Leave  Medicaid
Current Month Number Enrolled in Medicaid Medicaid Employer Other Uninsured Out of Universe Number Leaving Medicaid Employer Other Uninsured Out of Universe
9210 12614000 96.3% 1.7% 0.0% 1.7% 0.3% 468000 47.1% 0.0% 44.6% 8.3%
9211 12800000 95.8% 2.0% 0.1% 2.0% 0.2% 541000 46.2% 1.2% 46.9% 5.6%
9212 12829000 96.1% 1.1% 0.0% 2.4% 0.4% 503000 28.8% 1.1% 60.8% 9.4%
9301 12842000 95.7% 1.4% 0.2% 2.5% 0.3% 558000 31.8% 3.5% 58.3% 6.4%
9302 12901000 97.1% 0.9% 0.1% 1.6% 0.3% 374000 32.0% 2.7% 55.8% 9.5%
9303 13187000 95.9% 1.4% 0.0% 2.5% 0.2% 539000 35.0% 0.0% 60.6% 4.4%
9304 13264000 94.5% 1.8% 0.2% 3.0% 0.5% 735000 33.2% 3.0% 54.0% 9.8%
9305 12983000 96.3% 1.3% 0.1% 1.9% 0.4% 474000 35.3% 2.3% 52.7% 9.7%
9306 13328000 95.4% 1.3% 0.2% 2.8% 0.4% 618000 28.2% 4.5% 59.6% 7.7%
9307 13294000 95.5% 1.8% 0.1% 2.1% 0.5% 600000 39.6% 2.5% 46.8% 11.1%
9308 13233000 95.6% 0.7% 0.0% 3.1% 0.5% 584000 16.3% 1.0% 70.7% 12.0%
9309 13369000 94.8% 2.0% 0.1% 2.9% 0.3% 701000 38.2% 1.9% 54.6% 5.3%
9310 13236000 95.9% 1.9% 0.0% 2.2% 0.1% 541000 45.6% 0.0% 53.1% 1.3%
9311 13263000 95.7% 1.9% 0.4% 1.9% 0.1% 569000 43.5% 8.5% 44.6% 3.4%
9312 13233000 95.5% 1.6% 0.2% 2.5% 0.3% 595000 35.0% 3.5% 54.6% 7.0%
9401 13231000 95.4% 0.8% 0.1% 3.5% 0.1% 605000 18.2% 2.1% 76.5% 3.2%
9402 13228000 95.8% 1.1% 0.3% 2.3% 0.6% 560000 25.1% 7.9% 53.3% 13.8%
9403 13079000 96.1% 1.6% 0.1% 2.0% 0.2% 514000 40.5% 3.0% 50.6% 5.9%
9404 13185000 96.2% 1.1% 0.0% 2.3% 0.4% 505000 28.6% 1.2% 60.8% 9.4%
9405 13109000 96.7% 1.4% 0.0% 1.8% 0.1% 432000 43.1% 0.0% 53.7% 3.2%
9406 13270000 96.0% 1.4% 0.0% 2.3% 0.3% 526000 34.2% 0.0% 59.0% 6.9%
9407 13372000 95.1% 1.7% 0.0% 2.5% 0.6% 652000 35.1% 0.0% 52.1% 12.8%
9408 13418000 95.7% 1.6% 0.1% 2.6% 0.0% 577000 37.3% 2.1% 60.6% 0.0%
Average 13142000 95.8% 1.5% 0.1% 2.4% 0.3% 555000 34.5% 2.3% 56.0% 7.3%
SOURCE: Survey of Income and Program Participation, 1992 Panel.

 

TABLE 11: CHILDREN UNDER 19 ENROLLED IN MEDICAID BY INSURANCE STATUS IN PRECEDING MONTH: FY 1993 and 1994
 
    Type of Coverage in Preceding Month   Type of Coverage in Preceding Month Among Children Who Enter Medicaid
Current Month Number Enrolled in Medicaid Medicaid Employer Other Uninsured Out of Universe Number Entering Medicaid Employer Other Uninsured Not in Universe
9211 12800000 94.9% 1.1% 0.1% 3.1% 0.8% 655000 21.0% 2.8% 60.3% 15.9%
9212 12829000 95.6% 1.3% 0.0% 2.6% 0.6% 570000 29.1% 0.0% 58.3% 12.5%
9301 12842000 96.0% 1.3% 0.5% 1.8% 0.4% 516000 31.5% 12.7% 45.8% 10.0%
9302 12901000 95.2% 1.4% 0.2% 2.3% 0.8% 617000 30.0% 3.9% 49.0% 17.1%
9303 13187000 95.0% 1.6% 0.0% 2.3% 1.1% 660000 32.0% 0.0% 46.2% 21.8%
9304 13264000 95.4% 1.7% 0.1% 1.8% 1.1% 616000 36.0% 2.5% 38.4% 23.0%
9305 12983000 96.5% 0.7% 0.1% 2.2% 0.6% 453000 18.8% 2.5% 62.8% 15.9%
9306 13328000 93.9% 2.1% 0.0% 3.2% 0.8% 819000 33.5% 0.0% 52.7% 13.8%
9307 13294000 95.6% 1.7% 0.0% 1.9% 0.8% 584000 38.0% 0.0% 44.2% 17.8%
9308 13233000 95.9% 1.0% 0.0% 2.6% 0.5% 540000 25.1% 0.0% 62.7% 12.2%
9309 13369000 94.6% 1.9% 0.0% 2.9% 0.6% 720000 34.7% 0.0% 54.5% 10.7%
9310 13236000 95.7% 1.3% 0.0% 2.6% 0.4% 567000 30.2% 0.9% 59.6% 9.3%
9311 13263000 95.7% 1.1% 0.1% 2.5% 0.6% 568000 25.5% 3.1% 58.3% 13.1%
9312 13233000 95.9% 1.7% 0.2% 1.7% 0.5% 540000 41.6% 3.7% 41.6% 13.0%
9401 13231000 95.5% 1.7% 0.0% 2.4% 0.4% 593000 38.5% 0.0% 53.1% 8.4%
9402 13228000 95.4% 2.0% 0.0% 2.1% 0.5% 602000 43.5% 1.1% 45.1% 10.3%
9403 13079000 96.9% 0.3% 0.1% 2.0% 0.7% 412000 9.4% 4.4% 64.1% 22.2%
9404 13185000 95.3% 1.6% 0.1% 2.5% 0.5% 621000 34.4% 2.9% 52.1% 10.6%
9405 13109000 96.7% 1.4% 0.0% 1.5% 0.4% 428000 41.5% 0.0% 45.7% 12.8%
9406 13270000 95.5% 0.9% 0.2% 3.0% 0.3% 594000 20.2% 4.7% 67.6% 7.5%
9407 13372000 95.3% 1.5% 0.0% 2.8% 0.4% 628000 32.0% 0.0% 60.1% 7.9%
9408 13418000 94.8% 1.9% 0.0% 2.2% 1.0% 698000 36.1% 0.9% 43.2% 19.8%
9409 13259000 96.8% 1.2% 0.0% 1.5% 0.5% 418000 37.9% 0.0% 47.1% 14.9%
Average 13170000 95.6% 1.4% 0.1% 2.3% 0.6% 583000 31.6% 1.9% 52.6% 13.9%
SOURCE: Survey of Income and Program Participation, 1992 Panel.

Neither Table 10 nor Table 11 shows any evidence of seasonality or trend in the exits from or entrances into Medicaid enrollment. That Medicaid enrollment among the SIPP population of children under 19 grows by nearly 500,000 over the period can be attributed to the fact that new enrollments tended to outnumber exits from Medicaid in each month rather than one series growing or declining more rapidly than the other.

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