Frequencies for first 10,000 rows of tkbedl_t variable in vindecode dataset : (bed | length) | description | Freq. Percent Cum. ------------+----------------------------------- | 7,698 76.98 76.98 Extended | 129 1.29 78.27 Long | 66 0.66 78.93 Regular | 1,779 17.79 96.72 Short | 107 1.07 97.79 Unknown | 221 2.21 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Oct 2016