_dta:
  1.  countyrate2013 set up by Jean Roth , jroth@nber.org , 19 Dec 2016
  2.  Source Page: https://www.cms.gov/Medicare/Health-Plans/MedicareAdvtgSpecRateStats/Ratebooks-and-Supporting-Data.html
  3.  Source File URL: www.cms.gov/Medicare/Health-Plans/MedicareAdvtgSpecRateStats/Downloads/ratebook.zip

  obs:         3,246                          
 vars:            13                          19 Dec 2016 15:09
 size:       360,306                          (_dta has notes)
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
              storage   display    value
variable name   type    format     label      variable label
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
ssacounty       str5    %9s                   SSA County Code
stabbr          str2    %9s                   State 2-Character Abbreviation
countyname      str21   %21s                  County name
abrisk5         str8    %9s                   Risk Parts A & B 5-Star
abrisk45        str8    %9s                   Risk Parts A & B 4.5-Star
abrisk4         str8    %9s                   Risk Parts A & B 4-Star
abrisk35        str8    %9s                   Risk Parts A & B 3.5-Star
abrisk3         str8    %9s                   Risk Parts A & B 3-Star
abrisk25        str8    %9s                   Risk Parts A & B <=2.5-Star
abesrd          str8    %9s                   ESRD Parts A & B
fipsstco        str5    %9s                   FIPS State and County Code
state           str20   %20s                  State Name
year            int     %9.0g                 Year
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Sorted by: ssacounty