II-28b: Age Distribution of New Doctorate Recipients, by Academic Field, 2013
Source: American Academy of Arts and Sciences, Humanities Indicators (humanitiesindicators.org). Plotted values obtained from National Science Foundation, National Center for Science and Engineering Statistics, Doctorate Recipients from U.S. Universities: 2013, NSF 15-304 (Arlington, VA: National Science Foundation, 2014), table 27.
The data on which this indicator is based are collected as part of the federal Survey of Earned Doctorates, which relies on information reported by doctoral students at the time they earn their degree. This indicator relies on 2013 data because this is the most recent year for which complete information is available. (In order to avoid disclosure of confidential information, the National Science Foundation did not publish estimates for the youngest age group in 2014.)