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. Author manuscript; available in PMC: 2020 Mar 12.
Published in final edited form as: Health Aff (Millwood). 2019 Apr;38(4):633–642. doi: 10.1377/hlthaff.2018.05049

Exhibit 3.

Average Annual Outpatient Services Used Among Individuals with OUD, and subsets receiving Buprenorphine and Naltrexone, 2014 – 2016

2014 2015 2016 P-Value
All Individuals with Diagnosed OUD 4,144 6,856 8,318
 Percent with any counseling 60.91% 62.08% 60.69% ***
 Mean number of counseling sessions 6.6 7.0 6.6
 Percent with any drug tests 1 1 1
 Mean number of drug tests 44.31% 50.54% 56.42% ***
 Median number of labs 5.3 5.5 6.3 ***
 Percent with any evaluation & management visits 0 1 1
 Mean number evaluation & management visits 62.45% 68.28% 71.81% ***
 Median number evaluation & management visits 5.4 5.6 7.0 ***
 Percent any buprenorphine 1 2 2
 Percent any naltrexone 32.70% 40.94% 45.72% ***
 Percent with counseling only 4.87% 5.88% 6.91% ***
All Individuals with OUD and Buprenorphine Fills 30.77% 26.37% 22.39% ***
 Mean days supply buprenorphine 1,355 2,807 3,803
 Median days supply buprenorphine 161.3 183.4 185.3 ***
 Percent with any counseling 140 161 168
 Mean number of counseling sessions 17.5 18.2 18.5 *
 Median number of counseling sessions 15 16 16
 Percent of with any drug tests 82.66% 78.34% 74.97% ***
 Mean number of drug tests 11.9 11.3 9.3 ***
 Median number of drug tests 8 6 5
 Percent with any evaluation & management visits 89.59% 87.64% 85.83% ***
 Mean number evaluation & management visits 14.8 12.3 12.3 ***
 Median number evaluation & management visits 11 8 8
All Individuals with OUD and Naltrexone Fills 89.59% 93.05% 91.61% ***
 Mean days supply of naltrexone 13.9 11.9 13.5
 Median days supply of naltrexone 11 8 10
 Percent with any counseling 202 403 575
 Mean number of counseling sessions 57.5 43.6 38.3 ***
 Median number of counseling sessions 30 30 29
 Percent with any drug test 2.3 1.9 1.9 *
 Mean number of drug tests 1 1 1
 Median number of drug tests 73.76% 75.68% 71.30% ***
 Percent with any evaluation & management visits 11.2 9.8 9.6
 Mean number evaluation & management visits 3 3 3
 Median number evaluation & management visits 46.04% 48.64% 60.17% ***

Source: Authors’ analysis of West Virginia Medicaid expansion claims data 2014–2016.

Notes: Drug tests, counseling sessions, and physician visits defined using procedure codes. Medication fills determined using three-level hierarchical ingredient code (HIC3) codes. Each observation in these tables is a person year with at least 10 months of enrollment in the Medicaid expansion. N.A. is displayed next to median statistics because p-values were not calculated for changes in medians.

*

P<.05,

**

P<.01,

***

P<.001