Frequencies for first 10,000 rows of proc32d variable in namcs2011 dataset : Procedure 3 | - 2 digit | Freq. Percent Cum. ------------+----------------------------------- -9 | 9,621 96.21 96.21 17 | 1 0.01 96.22 22 | 1 0.01 96.23 38 | 1 0.01 96.24 43 | 1 0.01 96.25 44 | 1 0.01 96.26 45 | 2 0.02 96.28 46 | 1 0.01 96.29 47 | 1 0.01 96.30 48 | 1 0.01 96.31 49 | 1 0.01 96.32 78 | 1 0.01 96.33 81 | 2 0.02 96.35 86 | 6 0.06 96.41 87 | 1 0.01 96.42 88 | 2 0.02 96.44 89 | 211 2.11 98.55 90 | 16 0.16 98.71 91 | 1 0.01 98.72 93 | 19 0.19 98.91 94 | 3 0.03 98.94 95 | 82 0.82 99.76 99 | 24 0.24 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016