Frequencies for first 10,000 rows of cpsum variable in nhamcsopd2007 dataset : clustered | cpsu marker | -- masked | Freq. Percent Cum. ------------+----------------------------------- 6 | 162 1.62 1.62 7 | 225 2.25 3.87 8 | 148 1.48 5.35 9 | 171 1.71 7.06 13 | 211 2.11 9.17 16 | 108 1.08 10.25 19 | 69 0.69 10.94 20 | 110 1.10 12.04 22 | 59 0.59 12.63 23 | 154 1.54 14.17 26 | 429 4.29 18.46 28 | 153 1.53 19.99 30 | 163 1.63 21.62 31 | 561 5.61 27.23 33 | 115 1.15 28.38 34 | 329 3.29 31.67 36 | 264 2.64 34.31 37 | 118 1.18 35.49 38 | 230 2.30 37.79 39 | 595 5.95 43.74 40 | 235 2.35 46.09 43 | 91 0.91 47.00 45 | 78 0.78 47.78 46 | 205 2.05 49.83 100001 | 387 3.87 53.70 100002 | 183 1.83 55.53 100003 | 322 3.22 58.75 100005 | 107 1.07 59.82 100006 | 68 0.68 60.50 100011 | 153 1.53 62.03 100016 | 363 3.63 65.66 100017 | 137 1.37 67.03 100018 | 107 1.07 68.10 100021 | 190 1.90 70.00 100022 | 86 0.86 70.86 100024 | 183 1.83 72.69 100025 | 158 1.58 74.27 100026 | 183 1.83 76.10 100029 | 174 1.74 77.84 100030 | 165 1.65 79.49 100038 | 133 1.33 80.82 100039 | 138 1.38 82.20 100040 | 272 2.72 84.92 100044 | 28 0.28 85.20 100045 | 191 1.91 87.11 100046 | 265 2.65 89.76 100047 | 207 2.07 91.83 100053 | 61 0.61 92.44 100058 | 178 1.78 94.22 100059 | 342 3.42 97.64 100060 | 236 2.36 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016