Frequencies for backsurgeryper1000medicareenroll variable in 1992_surg_discharg Back | Surgery per | 1000 | Medicare | Enrollees | 1992 | Freq. Percent Cum. ------------+----------------------------------- 1.155504 | 1 1.92 1.92 1.284527 | 1 1.92 3.85 1.288597 | 1 1.92 5.77 1.522194 | 1 1.92 7.69 1.602185 | 1 1.92 9.62 1.724942 | 1 1.92 11.54 1.885056 | 1 1.92 13.46 2.012881 | 1 1.92 15.38 2.049916 | 1 1.92 17.31 2.114328 | 1 1.92 19.23 2.155045 | 1 1.92 21.15 2.185538 | 1 1.92 23.08 2.211141 | 1 1.92 25.00 2.25288 | 1 1.92 26.92 2.292659 | 1 1.92 28.85 2.338851 | 1 1.92 30.77 2.33922 | 1 1.92 32.69 2.409446 | 1 1.92 34.62 2.427401 | 1 1.92 36.54 2.450504 | 1 1.92 38.46 2.460646 | 1 1.92 40.38 2.472965 | 1 1.92 42.31 2.474408 | 1 1.92 44.23 2.476911 | 1 1.92 46.15 2.485419 | 1 1.92 48.08 2.502775 | 1 1.92 50.00 2.521231 | 1 1.92 51.92 2.540169 | 1 1.92 53.85 2.560874 | 1 1.92 55.77 2.58708 | 1 1.92 57.69 2.600885 | 1 1.92 59.62 2.63427 | 1 1.92 61.54 2.686619 | 1 1.92 63.46 2.687364 | 1 1.92 65.38 2.721173 | 1 1.92 67.31 2.773844 | 1 1.92 69.23 2.817401 | 1 1.92 71.15 2.843343 | 1 1.92 73.08 2.847812 | 1 1.92 75.00 2.889483 | 1 1.92 76.92 2.902682 | 1 1.92 78.85 2.924891 | 1 1.92 80.77 3.021624 | 1 1.92 82.69 3.058957 | 1 1.92 84.62 3.100983 | 1 1.92 86.54 3.123566 | 1 1.92 88.46 3.484182 | 1 1.92 90.38 3.577913 | 1 1.92 92.31 3.846161 | 1 1.92 94.23 4.220342 | 1 1.92 96.15 4.395647 | 1 1.92 98.08 4.438553 | 1 1.92 100.00 ------------+----------------------------------- Total | 52 100.00 by Jean Roth , jroth@nber.org , 14 Mar 2018