Frequencies for first 10,000 rows of amb2 variable in namcs2001 dataset : surgical | procedure | #2 - 4 | digit | Freq. Percent Cum. ------------+----------------------------------- 0000 | 9,804 98.04 98.04 0399 | 1 0.01 98.05 0443 | 1 0.01 98.06 0899 | 1 0.01 98.07 1371 | 5 0.05 98.12 149- | 1 0.01 98.13 1809 | 1 0.01 98.14 1812 | 1 0.01 98.15 2009 | 1 0.01 98.16 208- | 2 0.02 98.18 2132 | 2 0.02 98.20 2169 | 2 0.02 98.22 2188 | 2 0.02 98.24 2241 | 1 0.01 98.25 2263 | 3 0.03 98.28 2743 | 1 0.01 98.29 2772 | 1 0.01 98.30 283- | 1 0.01 98.31 2912 | 1 0.01 98.32 294- | 1 0.01 98.33 311- | 1 0.01 98.34 3601 | 2 0.02 98.36 3726 | 1 0.01 98.37 3794 | 1 0.01 98.38 3992 | 1 0.01 98.39 4023 | 3 0.03 98.42 458- | 1 0.01 98.43 4701 | 1 0.01 98.44 539- | 1 0.01 98.45 5459 | 1 0.01 98.46 5551 | 1 0.01 98.47 5749 | 2 0.02 98.49 5794 | 1 0.01 98.50 586- | 1 0.01 98.51 594- | 1 0.01 98.52 595- | 1 0.01 98.53 598- | 1 0.01 98.54 613- | 1 0.01 98.55 631- | 1 0.01 98.56 6539 | 1 0.01 98.57 6561 | 2 0.02 98.59 6639 | 1 0.01 98.60 6739 | 1 0.01 98.61 6823 | 1 0.01 98.62 6829 | 1 0.01 98.63 689- | 1 0.01 98.64 6909 | 5 0.05 98.69 7051 | 1 0.01 98.70 7092 | 1 0.01 98.71 7111 | 1 0.01 98.72 7803 | 1 0.01 98.73 7936 | 1 0.01 98.74 8026 | 1 0.01 98.75 8041 | 1 0.01 98.76 8051 | 1 0.01 98.77 806- | 2 0.02 98.79 8086 | 1 0.01 98.80 8102 | 4 0.04 98.84 8108 | 1 0.01 98.85 8192 | 2 0.02 98.87 8281 | 1 0.01 98.88 8363 | 1 0.01 98.89 8377 | 1 0.01 98.90 8448 | 1 0.01 98.91 8511 | 2 0.02 98.93 8519 | 2 0.02 98.95 8521 | 1 0.01 98.96 8523 | 1 0.01 98.97 8554 | 2 0.02 98.99 856- | 2 0.02 99.01 8591 | 1 0.01 99.02 8602 | 2 0.02 99.04 8604 | 2 0.02 99.06 8607 | 1 0.01 99.07 8611 | 18 0.18 99.25 8623 | 1 0.01 99.26 8624 | 2 0.02 99.28 8625 | 1 0.01 99.29 863- | 45 0.45 99.74 8669 | 1 0.01 99.75 8670 | 1 0.01 99.76 8682 | 1 0.01 99.77 8689 | 2 0.02 99.79 8777 | 1 0.01 99.80 8838 | 1 0.01 99.81 8848 | 1 0.01 99.82 8922 | 1 0.01 99.83 9359 | 1 0.01 99.84 9649 | 1 0.01 99.85 9725 | 1 0.01 99.86 9851 | 1 0.01 99.87 9929 | 11 0.11 99.98 9999 | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016