Frequencies for first 10,000 rows of amb2 variable in namcs1997 dataset : ambulatory | surg | procedure | #2 - 4 dgt | Freq. Percent Cum. ------------+----------------------------------- 0000 | 9,950 99.50 99.50 0820 | 3 0.03 99.53 0881 | 1 0.01 99.54 1879 | 1 0.01 99.55 194- | 1 0.01 99.56 2132 | 2 0.02 99.58 2769 | 1 0.01 99.59 2911 | 1 0.01 99.60 3142 | 1 0.01 99.61 4224 | 1 0.01 99.62 4513 | 2 0.02 99.64 4523 | 1 0.01 99.65 5472 | 1 0.01 99.66 6711 | 1 0.01 99.67 7021 | 1 0.01 99.68 8582 | 1 0.01 99.69 8611 | 4 0.04 99.73 8628 | 1 0.01 99.74 863- | 11 0.11 99.85 8683 | 1 0.01 99.86 8689 | 1 0.01 99.87 8924 | 1 0.01 99.88 9029 | 2 0.02 99.90 9039 | 1 0.01 99.91 9169 | 5 0.05 99.96 9357 | 2 0.02 99.98 9625 | 1 0.01 99.99 9999 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016