_dta:
  1.  pdp2009 data set up by Jean Roth , jroth@nber.org , 17 May 2015
  2.  Excel file 2009LandscapeSourceData_PDP_11_03_08.xls
  3.  Sheet PDP
  4.  2009 Medicare Part D Stand-Alone Prescription Drug Plans
  5.  Data as of November 3, 2008.  Includes all contracts/plans regardless of 2009 approval status.  Employer sponsored plans (800 series) are
      excluded. (Last Updated 11/03/08)
  6.  Notes: Data are subject to change as contracts are being finalized.  Gap coverage descriptions for the 2009 benefit year are have been
      revised.  The percentage of “Generic” products and the percentage of “Brand” products covered in the gap are each separately calculated and
      the following descriptions are added:  “All”: 100% of drugs are covered through the gap, “Many”: ≥65% to <100% of drugs are covered through
      the gap, “Some”: ≥10% to <65 % of drugs are covered through the gap, “Few”: >0% to <10% of drugs are covered through the gap (and must also
      be >15 products covered through the gap), “No Gap Coverage”:  0% of drugs are covered through the gap (or ≤15 products covered through the
      gap).  A label of “All Formulary Drugs” is applied for plans that cover 100% of “Generic” and 100% of “Brand” products (either by covering
      all drug products in the gap or by having no initial coverage limit).

  obs:         2,563                          
 vars:            11                          17 May 2015 16:15
 size:       451,088                          (_dta has notes)
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              storage   display    value
variable name   type    format     label      variable label
-------------------------------------------------------------------------------------------------------------------------------------------------
state           str24   %24s                  State
companyname     str50   %50s                  Company Name
planname        str44   %44s                  Plan Name
benefittype     str8    %9s                   Benefit Type
zerodollarpremiumwithfulllo
                str2    %9s                   $0 Premium with Full Low-Income Subsidy?
monthlydrugpremium
                double  %10.0g                Monthly Drug Premium
annualdrugdeductible
                int     %10.0g                Annual Drug Deductible
typeofextracoverageoffered
                str28   %28s                  Type of Extra Coverage Offered in the Gap
contractid      str5    %9s                   Contract ID
planid          str3    %9s                   Plan ID
benefittypedetail
                str2    %9s                   Benefit Type Detail
-------------------------------------------------------------------------------------------------------------------------------------------------
Sorted by: state  contractid  planid