Summary statistics for ndchcpcsawp dataset : by Jean Roth , jroth@nber.org , 5 Feb 2018 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- hcpcs | 0 shortdescr~r | 0 labelername | 0 ndc | 0 ndcdash | 0 -------------+--------------------------------------------------------- drugname | 0 hcpcsdosage | 0 pkgsize | 200 106.8495 161.3414 .1 1000 pkgqty | 200 3.275 3.777662 1 10 billunits | 200 2.837 3.284398 .2 20 -------------+--------------------------------------------------------- billunitspkg | 200 4.932 4.035929 .2 20 by Jean Roth , jroth@nber.org , 5 Feb 2018