Categories of culture positivity correspond to quantiles of data. The HHS regions represent the states as follows: Region I (CT, ME, MA, NH, RI, VT), Region II (NJ, NY, PR, VI), Region III (DC, DE, MD, VA, WV, PA), Region IV (KY, TN, NC, SC, GA, AL, MS, FL) Region V (MN, WI, MI, IL, IN, OH), Region VI (NM, TX, OK, AR, LA), Region VII (NE, IA, KS, MO), Region VIII (ND, SD, MT, WY, CO, UT), Region IX (CA, NV, AZ, HI, GU, AS, MP, PW, FM, MH), Region X (AK, WA, OR, ID). a Proportion of Labcorp Tests Administered by Region. b Total NTM Culture Positivity (excluding M. gordonae)