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Table 2 Summary of articles addressing the effects of uninsurance on access to specialty care.

From: Effects of insurance status on children's access to specialty care: a systematic review of the literature

Author Year Sample Size Data Source Study Design Access Measure Statistic Comparison Findings Endogeneity/Selection
Kane et al. [12] 2005 700 National Survey of CSHCN, single state Cross-sectional Unmet needs Logistic regression; likelihood of unmet need Ever uninsured vs. insured all year OR = 8.6, p < 0.001 No consideration of selection into insurance
Mayer et al. [13] 2003 38,866 National Survey of CSHCN Cross-sectional Unmet need Logistic regression; likelihood of unmet need for specialty care Private insurance vs. uninsured OR = 4.29, p < 0.01 No consideration of selection into coverage type
Park et al. [14] 2002 1,985 National Health Interview Survey Cross-sectional Utilization Proportion having seen a specialist (exact values not reported) Uninsured vs. any insurance type Less likely vs. any insurance No consideration of selection into coverage type
Perlstein et al. [15] 1997 544 Regional cardiac registry Retrospective cohort Time to referral t-test; mean age at referral Uninsured vs. "commercial" 251 days vs. 80 days, p < 0.05 No consideration of selection into coverage type
Szilagyi, et al. [16] 2000 2,126 Single SCHIP Quasi-experimental Utilization t-test, difference in number of specialist visits (pre- and post-enrollment) Uninsured vs. following SCHIP enrollment Fivefold increase in utilization after SCHIP enrollment No consideration of selection in program