Humanities Indicators
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II-24b: Median Years to Doctorate* for PhDs Reporting Personal Savings/Earnings or Employer Support as Their Primary Type of Financial Support, by Broad Field of Study,** Graduation Years 2002–2013

* Time in doctoral program is measured as the difference between the month and year the doctorate was granted and the month and year the student started his or her doctoral program (or most recent master’s degree program, if the master’s was earned at the same institution as the doctorate).
** Life sciences includes agricultural sciences and natural resources; biological and biomedical sciences; and health sciences. Physical sciences includes mathematics and computer and information sciences. Social sciences includes psychology.

Source: National Science Foundation, National Center for Science and Engineering Statistics, Survey of Earned Doctorates (SED; a custom tabulation of SED data was prepared for the Humanities Indicators by NORC at the University of Chicago).

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