Frequencies for first 10,000 rows of timemd variable in namcs1993 dataset : duration of visit (in | minutes) | Freq. Percent Cum. -----------------------+----------------------------------- 0 minutes | 251 2.51 2.51 1 minute | 8 0.08 2.59 2 minutes | 23 0.23 2.82 3 minutes | 19 0.19 3.01 4 minutes | 20 0.20 3.21 5 minutes | 536 5.36 8.57 6 minutes | 51 0.51 9.08 7 minutes | 151 1.51 10.59 8 minutes | 135 1.35 11.94 9 minutes | 50 0.50 12.44 10 minutes | 2,141 21.41 33.85 11 minutes | 53 0.53 34.38 12 minutes | 200 2.00 36.38 13 minutes | 59 0.59 36.97 14 minutes | 49 0.49 37.46 15 minutes | 3,006 30.06 67.52 16 minutes | 42 0.42 67.94 17 minutes | 36 0.36 68.30 18 minutes | 93 0.93 69.23 19 minutes | 11 0.11 69.34 20 minutes | 1,386 13.86 83.20 21 minutes | 14 0.14 83.34 22 minutes | 38 0.38 83.72 23 minutes | 14 0.14 83.86 24 minutes | 9 0.09 83.95 25 minutes | 301 3.01 86.96 26 minutes | 12 0.12 87.08 27 minutes | 5 0.05 87.13 28 minutes | 10 0.10 87.23 29 minutes | 7 0.07 87.30 30 minutes | 686 6.86 94.16 31 minutes | 2 0.02 94.18 32 minutes | 13 0.13 94.31 33 minutes | 5 0.05 94.36 34 minutes | 2 0.02 94.38 35 minutes | 72 0.72 95.10 36 minutes | 3 0.03 95.13 37 minutes | 1 0.01 95.14 38 minutes | 4 0.04 95.18 39 minutes | 1 0.01 95.19 40 minutes | 102 1.02 96.21 42 minutes | 5 0.05 96.26 45 minutes | 177 1.77 98.03 49 minutes | 1 0.01 98.04 50 minutes | 31 0.31 98.35 55 minutes | 8 0.08 98.43 1 hour | 115 1.15 99.58 1 hour and 5 minutes | 1 0.01 99.59 1 hour and 10 minutes | 11 0.11 99.70 1 hour and 11 minutes | 1 0.01 99.71 1 hour and 13 minutes | 1 0.01 99.72 1 hour and 15 minutes | 3 0.03 99.75 1 hour and 20 minutes | 2 0.02 99.77 1 hour and 25 minutes | 1 0.01 99.78 1 hour and 30 minutes | 12 0.12 99.90 1 hour and 35 minutes | 1 0.01 99.91 1 hour and 55 minutes | 1 0.01 99.92 2 hours | 7 0.07 99.99 2 hours and 30 minutes | 1 0.01 100.00 -----------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016