Frequencies for first 10,000 rows of amb1 variable in namcs1999 dataset : ambulatory | surg | procedure | #1 - 4 dgt | Freq. Percent Cum. ------------+----------------------------------- 0000 | 9,380 93.80 93.80 0391 | 1 0.01 93.81 0392 | 2 0.02 93.83 0601 | 1 0.01 93.84 0809 | 1 0.01 93.85 0820 | 2 0.02 93.87 0822 | 1 0.01 93.88 0825 | 2 0.02 93.90 1341 | 1 0.01 93.91 1364 | 3 0.03 93.94 1424 | 2 0.02 93.96 1434 | 3 0.03 93.99 1459 | 1 0.01 94.00 1809 | 1 0.01 94.01 1812 | 1 0.01 94.02 1829 | 5 0.05 94.07 194- | 1 0.01 94.08 2001 | 2 0.02 94.10 208- | 2 0.02 94.12 2103 | 3 0.03 94.15 2121 | 2 0.02 94.17 2122 | 3 0.03 94.20 2130 | 1 0.01 94.21 2131 | 1 0.01 94.22 2132 | 2 0.02 94.24 2191 | 1 0.01 94.25 240- | 1 0.01 94.26 2723 | 1 0.01 94.27 2731 | 1 0.01 94.28 280- | 1 0.01 94.29 283- | 2 0.02 94.31 2911 | 1 0.01 94.32 3142 | 3 0.03 94.35 3893 | 1 0.01 94.36 3992 | 1 0.01 94.37 3999 | 2 0.02 94.39 4131 | 1 0.01 94.40 4413 | 1 0.01 94.41 4513 | 5 0.05 94.46 4523 | 5 0.05 94.51 4524 | 6 0.06 94.57 4525 | 1 0.01 94.58 4901 | 1 0.01 94.59 4921 | 4 0.04 94.63 4939 | 3 0.03 94.66 4945 | 3 0.03 94.69 4946 | 1 0.01 94.70 5123 | 1 0.01 94.71 5421 | 1 0.01 94.72 543- | 2 0.02 94.74 5523 | 1 0.01 94.75 5732 | 3 0.03 94.78 5794 | 1 0.01 94.79 586- | 4 0.04 94.83 610- | 3 0.03 94.86 6373 | 7 0.07 94.93 642- | 2 0.02 94.95 6499 | 2 0.02 94.97 6712 | 1 0.01 94.98 6732 | 1 0.01 94.99 6816 | 2 0.02 95.01 6823 | 1 0.01 95.02 6992 | 1 0.01 95.03 7011 | 1 0.01 95.04 7033 | 1 0.01 95.05 7111 | 1 0.01 95.06 8086 | 1 0.01 95.07 8191 | 5 0.05 95.12 8192 | 7 0.07 95.19 8396 | 1 0.01 95.20 8398 | 1 0.01 95.21 8511 | 1 0.01 95.22 8521 | 1 0.01 95.23 8591 | 5 0.05 95.28 8601 | 3 0.03 95.31 8602 | 34 0.34 95.65 8604 | 9 0.09 95.74 8605 | 4 0.04 95.78 8611 | 71 0.71 96.49 8623 | 1 0.01 96.50 8624 | 1 0.01 96.51 8628 | 6 0.06 96.57 863- | 243 2.43 99.00 864- | 1 0.01 99.01 8659 | 3 0.03 99.04 8664 | 6 0.06 99.10 8689 | 1 0.01 99.11 8692 | 2 0.02 99.13 8699 | 3 0.03 99.16 8939 | 2 0.02 99.18 8941 | 1 0.01 99.19 9169 | 1 0.01 99.20 9189 | 1 0.01 99.21 9353 | 1 0.01 99.22 9357 | 2 0.02 99.24 9359 | 8 0.08 99.32 9509 | 1 0.01 99.33 9512 | 4 0.04 99.37 9652 | 25 0.25 99.62 9659 | 2 0.02 99.64 966- | 1 0.01 99.65 9702 | 1 0.01 99.66 9738 | 4 0.04 99.70 9762 | 1 0.01 99.71 9783 | 1 0.01 99.72 9784 | 3 0.03 99.75 9787 | 1 0.01 99.76 9788 | 3 0.03 99.79 9789 | 12 0.12 99.91 9811 | 1 0.01 99.92 9820 | 2 0.02 99.94 9821 | 1 0.01 99.95 9923 | 1 0.01 99.96 9929 | 1 0.01 99.97 9999 | 3 0.03 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016