Frequencies for first 10,000 rows of dlfd variable in natl1981 dataset : Detail | Interval | Since Last | Fetal Death | Freq. Percent Cum. ------------+----------------------------------- 0 | 1 0.01 0.01 4 | 1 0.01 0.02 5 | 1 0.01 0.03 8 | 5 0.05 0.08 9 | 11 0.11 0.19 10 | 26 0.26 0.45 11 | 51 0.51 0.96 12 | 61 0.61 1.57 13 | 51 0.51 2.08 14 | 62 0.62 2.70 15 | 35 0.35 3.05 16 | 43 0.43 3.48 17 | 31 0.31 3.79 18 | 39 0.39 4.18 19 | 28 0.28 4.46 20 | 19 0.19 4.65 21 | 15 0.15 4.80 22 | 20 0.20 5.00 23 | 22 0.22 5.22 24 | 11 0.11 5.33 25 | 17 0.17 5.50 26 | 11 0.11 5.61 27 | 7 0.07 5.68 28 | 14 0.14 5.82 29 | 12 0.12 5.94 30 | 13 0.13 6.07 31 | 22 0.22 6.29 32 | 10 0.10 6.39 33 | 13 0.13 6.52 34 | 11 0.11 6.63 35 | 15 0.15 6.78 36 | 11 0.11 6.89 37 | 11 0.11 7.00 38 | 6 0.06 7.06 39 | 4 0.04 7.10 40 | 7 0.07 7.17 41 | 9 0.09 7.26 42 | 11 0.11 7.37 43 | 13 0.13 7.50 44 | 13 0.13 7.63 45 | 7 0.07 7.70 46 | 9 0.09 7.79 47 | 8 0.08 7.87 48 | 4 0.04 7.91 49 | 8 0.08 7.99 50 | 7 0.07 8.06 51 | 10 0.10 8.16 52 | 4 0.04 8.20 53 | 4 0.04 8.24 54 | 10 0.10 8.34 55 | 9 0.09 8.43 56 | 10 0.10 8.53 57 | 10 0.10 8.63 58 | 14 0.14 8.77 59 | 9 0.09 8.86 60 | 6 0.06 8.92 61 | 7 0.07 8.99 62 | 4 0.04 9.03 63 | 7 0.07 9.10 64 | 3 0.03 9.13 65 | 4 0.04 9.17 66 | 7 0.07 9.24 67 | 6 0.06 9.30 68 | 6 0.06 9.36 69 | 6 0.06 9.42 70 | 5 0.05 9.47 71 | 6 0.06 9.53 72 | 2 0.02 9.55 73 | 5 0.05 9.60 74 | 6 0.06 9.66 75 | 1 0.01 9.67 76 | 1 0.01 9.68 77 | 5 0.05 9.73 78 | 1 0.01 9.74 79 | 3 0.03 9.77 80 | 5 0.05 9.82 81 | 2 0.02 9.84 82 | 2 0.02 9.86 83 | 2 0.02 9.88 84 | 2 0.02 9.90 85 | 1 0.01 9.91 86 | 2 0.02 9.93 87 | 4 0.04 9.97 88 | 2 0.02 9.99 89 | 3 0.03 10.02 90 | 1 0.01 10.03 91 | 5 0.05 10.08 92 | 3 0.03 10.11 93 | 2 0.02 10.13 94 | 5 0.05 10.18 95 | 4 0.04 10.22 96 | 3 0.03 10.25 97 | 7 0.07 10.32 98 | 2 0.02 10.34 99 | 2 0.02 10.36 100 | 1 0.01 10.37 101 | 1 0.01 10.38 102 | 4 0.04 10.42 103 | 3 0.03 10.45 104 | 4 0.04 10.49 105 | 3 0.03 10.52 106 | 2 0.02 10.54 107 | 3 0.03 10.57 108 | 2 0.02 10.59 109 | 1 0.01 10.60 110 | 2 0.02 10.62 112 | 1 0.01 10.63 113 | 3 0.03 10.66 114 | 2 0.02 10.68 115 | 1 0.01 10.69 117 | 2 0.02 10.71 118 | 1 0.01 10.72 119 | 1 0.01 10.73 120 | 1 0.01 10.74 121 | 3 0.03 10.77 123 | 1 0.01 10.78 124 | 1 0.01 10.79 126 | 3 0.03 10.82 127 | 4 0.04 10.86 129 | 3 0.03 10.89 130 | 2 0.02 10.91 132 | 1 0.01 10.92 134 | 1 0.01 10.93 135 | 3 0.03 10.96 136 | 1 0.01 10.97 137 | 2 0.02 10.99 140 | 2 0.02 11.01 142 | 2 0.02 11.03 144 | 3 0.03 11.06 150 | 1 0.01 11.07 151 | 1 0.01 11.08 159 | 1 0.01 11.09 163 | 1 0.01 11.10 168 | 1 0.01 11.11 175 | 2 0.02 11.13 176 | 1 0.01 11.14 182 | 2 0.02 11.16 189 | 1 0.01 11.17 190 | 1 0.01 11.18 191 | 2 0.02 11.20 192 | 1 0.01 11.21 198 | 1 0.01 11.22 202 | 1 0.01 11.23 213 | 2 0.02 11.25 231 | 1 0.01 11.26 296 | 1 0.01 11.27 777 | 8,273 82.73 94.00 999 | 600 6.00 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 3 Jan 2016