Correction to: Measuring the impact of the Afordable Care Act Medicaid expansion on access to primary care using an interrupted time series approach

Correction to: Health Res Policy Sys (2021) 19:77 http://doi.org/10.1186/s12961-021–00730-0

It was highlighted that the original article [1] contained some typesetting errors in Table 1. Namely onn the row for "Medicaid $ per enrollee," there is an incorrect value (5,1205,120). That value should be 5,120 and in the Republican row there was an extra mention of value "34 (35.4)". This Correction article shows the correct table. The original article has been updated.

Table 1.

Demographic variables and primary care access by Affordable Care Act Medicaid expansion status, 2012–2015

Demographic Variablesa	NMEb States	MEc States	p-value
Access to Care (n, %)
Preventable Hospitalizations	1,096,631 (52.1)	1,006,483 (47.9)	0.2670
State Population	6,127,025	6,191,002	0.8776
18–64 years old
Race (%)
Minorities	41.7	38.9	0.9457
Education (%)
High School Graduate	87.3	86.1	0.0676
Bachelor’s Degree	27.4	30.2	0.0194
Income ($)
MHI	49,006	56,240	0.0005
Per Capita Income	26,381	29,865	0.0194
Poverty (%)
Below FPL	15.3	15.6	0.1704
Income < 10 k	7.2	7.6	0.2244
Food Stamps	14.0	13.5	0.2546
Unemployment	7.0	7.2	0.2595
Health care delivery characteristics
Physician fee index ($)d	0.60	0.58	0.8029
Medicaid $ per enrollee ($)e	3,336	5,120	< 0.0001
Income Eligibility, FPL (%)fIncome Eligibility, FPL (%)f	80.6	124.1	< 0.0001
Governor Political Affiliation
Democratic	0 (0.0)	27 (100.0)	< 0.0001
Republican	62 (64.6)	34 (35.4)
Control of State Legislature
Democratic	0 (0.0)	45 (100.0)	< 0.0001
Republican	62 (79.5)	16 (20.5)

^aT-test for continuous variables and chi-square test for categorical variables

^bNME: Non-Medicaid expansion states include South Carolina, Wisconsin, Georgia, and Florida

^cME: Medicaid expansion states include Arizona, Kentucky, New Jersey, and New York

^dMedicaid-to-Medicare Fee Index

^eMedicaid spending per enrollee

^fAverage of pre- and post- ACA FPL Medicaid Income Eligibility Limits for parents of dependent children (in a family of three)