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. 2012 Mar;129(3):426–432. doi: 10.1542/peds.2011-1505

TABLE 3.

Access to Care and Preventive Care Among Young Adults 19 to 23 Years Old in States Enacting Extension Eligibility Laws in 2005 and 2006 and in States Without These Laws During a Period Before Enactment (2002–2004) and After Enactment (2008–2009), Along With the Differential Changes in These Outcomes

State Sample Sample Size, No. Before, % (2002–2004)a After, % (2008–2009) Before-After Difference, % Difference in Differences, % (95% CI)a
Health insurance coverage
 No law 16 973 68.5 (67.5 to 69.4) 68.7 (67.4 to 70.1) 0.3 (−1.4 to 1.9)
 Extension laws (without MA) 3442 67.6 (65.5 to 69.7) 68.1 (65.1 to 71.0) 0.4 (−3.2 to 4.1) 0.2 (−3.8 to 4.2)
 Extension laws (with MA) 5278 71.1 (69.4 to 72.8) 74.9 (72.8 to 77.1) 3.9 (1.1 to 6.6) 3.6 (0.5 to 6.7)
Identification of a personal physician/clinician or health care provider
 No law 17 066 58.0 (59.0 to 57.0) 60.2 (58.8 to 61.6) 2.2 (0.5 to 3.9)
 Extension laws (without MA) 3459 62.4 (60.2 to 64.5) 65.5 (62.5 to 68.5) 3.2 (−0.5 to 6.9) 0.9 (−3.1 to 5.0)
 Extension laws (with MA) 5298 64.3 (62.5 to 66.1) 68.2 (65.9 to 70.4) 3.9 (1.0 to 6.8) 1.7 (−1.7 to 5.0)
Physical examination in past 2 y
 No law 9859 76.2 (74.8 to 77.7) 75.5 (74.3 to 76.7) −0.7 (−2.6 to 1.1)
 Extension laws (without MA) 1839 77.3 (74.0 to 80.6) 81.2 (78.6 to 83.7) 3.9 (−0.2 to 8.0) 4.6 (0 to 9.2)
 Extension laws (with MA) 2906 81 (78.4 to 83.7) 83 (81.1 to 84.8) 2.0 (2.0 to 5.2) 2.7 (−1.0 to 6.4)
Forgone care due to cost
 No law 13 327 17.8 (16.8 to 18.7) 19.4 (18.3 to 20.5) 1.7 (0.2 to 1)
 Extension laws (without MA) 2801 20.4 (18.3 to 22.6) 18.2 (15.7 to 20.7) −2.2 (−5.5 to 1.0) −3.9 (−0.3 to −7.5)
 Extension laws (with MA) 4277 18.6 (16.9 to 20.3) 16.0 (14.2 to 17.8) −2.6 (−0.1 to −5.1) −4.3 (−1.4 to −7.1)

States enacting eligibility extension laws in 2005 or 2006 included Colorado, New Jersey, and South Dakota, along with Massachusetts (MA). Results are presented both with and without MA. There were 17 states without laws, including the District of Columbia.

a

Difference in differences compares the before-after difference among states enacting extension laws in 2005 or 2006 with the before-after difference among states without extension laws.