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APPENDIX C
Definitions of Relevant Variables from the Data-Based
Assessment of Research-Doctorate Programs
61

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62 RESEARCH –DOCTORATE PROGRAMS IN THE BIOMEDICAL SCIENCES
Data from the Thomson Reuters (formerly Institute for Scientific Information) list of publications were used to
Data: T: Average Number of
construct this variable. It is the average over seven years, 2000-2006, of the number of articles for each allocated faculty
Research Publications (2000-2006)
member divided by the total number of faculty allocated to the program. Data were obtained by matching faculty lists
Activity per Allocated Faculty,
supplied by the programs to Thomson Reuters and cover publications extending back to 1981. For multi-authored
2006
articles, a publication is awarded for each author on the paper who is also on a faculty list.
The annual average of the number of allocated citations in the years 2000-2006 to papers published during the period
U: Average Citations per
1981-2006 by program faculty divided by the allocated publications that could contribute to the citations. For example,
Publication
the number of allocated citations for a faculty member in 2003 is found by taking the 2003 citations to that faculty
member’s publications between 1981 and 2003. These counts are summed over the total faculty in the program and
divided by the sum of the allocated publications to the program in 2003.
The faculty questionnaire asks whether a faculty member’s work is currently supported by an extramural grant or
V: Percent of Faculty
contract. The total of faculty who answered affirmatively was divided by the total respondents in the program and the
with Grants, 2006
percentage was calculated.
For each program, question E8 reported the type of support that full-time graduate students received during the fall term
Data: X: Percent of First Year
each year of enrollment. For this variable the data for the first year were added for all types of support and divided by
Student Students with Full
the total number of students.
Support & Financial Support, Fall
Outcomes 2005
Questions C16 and C17 reported for males and females separately the number of graduate students who entered in
Y: Avg. Completion
different cohorts from 1996-1997 to 2005-2006 and the number in each cohort who completed in 3 years or less, in their
Percentage:
4th, 5th, 6th, 7th, 8th, 9th years, and in 10 or more years. To compute the completion percentage, the number of doctoral
6 Years or Less
students for a given entering cohort who completed their doctorate in 3 years or less and in their 4th, 5th, 6th years were
totaled and the total was divided by the entering students in that cohort. This computation was made for each cohort that
entered from 1996-1997 to 2000-2001. Cohorts beyond these years were not considered, since the students could
complete in a year that was after the final year 2005-2006 for which data were collected. To compute the average
completion percentage, an average was taken over 5 cohorts.
Question C2 reported the median time to degree for full-time and part-time students. That reported number was used for
Z: Median Time to
this variable. The median was calculated from graduates who received doctoral degrees in the period 2003-2004 through
Degree (Full- and Part-
2005-2006. A negative coefficient means that shorter times are valued.
time Graduates), 2006

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APPENDIX C 63
For each program the data reported for question B7, the race/ethnicity of core and new faculty in the program, was used
Data: AC: Non-Asian Minority
to compute the ratio of non-Hispanic Blacks, Hispanic, and American Indians or Alaska Natives to that of all faculty
Diversity Faculty as a Percent of
with known race/ethnicity. “Core” faculty are those whose primary appointment is in the doctoral program. “New”
Total Core and New
faculty are those with tenure track appointments who were appointed in 2003-2006. Unknowns were excluded from the
Domestic Faculty, 2006
ratio, as were faculty who were neither American citizens nor permanent residents.
For each program the data reported for question B5, the gender of core and new faculty in the program, were used to
AD: Female Faculty as a
compute the ratio of core or new female faculty to the total of core and new faculty. Allocations were not used in the
Percent of Total Core
construction of this variable.
and New Faculty, 2006
Question C9c reported the race/ethnicity of graduate students in the program. This was used to compute the ratio of non-
AE: Non-Asian Minority
Hispanic Blacks, Hispanics, and American Indians or Alaska Natives to that of the total of students with known
Students as a Percent of
race/ethnicity. Respondents with Race/Ethnicity Unknown where excluded from the ratio, as were international students.
Total Domestic Students,
Fall 2005
Question C9 reported the gender of graduate students in the program. This was used to compute the percentage by
AF: Female Students as
taking the number of female graduate students divided by the total number of graduate students.
a Percent of Total
Students, Fall 2005
Question C9b reported the citizenship of graduate students in the program. These data were used to compute the
AG: International
percentage of international graduate students by taking the number with temporary visas and dividing it by the number
Students as a Percent of
of graduate students with known citizenship status.
Total Students, Fall 2005
Question C1 reported the number of doctoral degrees awarded each academic year from 2001-2002 to 2005-2006. The
Data: Other AH: Average Number
average of these numbers was used for this variable. If no data were provided for a particular year, the average was
Overall PhDs Graduated, 2002-
taken over the years for which there were data.
Ranking 2006
Measures
For each program, question D4 reported the average GRE verbal and quantitative scores for the 2003-2004, 2004-2005,
and 2005-2006 academic years and the number of individuals who reported their scores. A weighted average was used
AJ: Average GRE
to compute the average GRE, which was calculated by multiplying the number of individuals reporting scores by the
Scores, 2004-2006
reported average GRE score for each year, adding these three quantities and dividing by the sum of the individuals
reporting scores.

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64 RESEARCH –DOCTORATE PROGRAMS IN THE BIOMEDICAL SCIENCES
For each program question E8 reported the type of support full-time graduate students received during fall term each
AK: Percent of First-
year of enrollment. For this variable the data for the first year were added for support by externally funded fellowships
Year Students with
and combinations of external fellowships and other internal support and then divided by the total number of students.
External Fellowships,
2005
Data from the program questionnaire were used for this variable. Question D12 reported the percentage of graduate
AL: Is Student Work
students who have work space for their exclusive use. If reported percentage was 100 percent, then a value of 1 was
Space Provided? (1=Yes;
given to this variable. Otherwise the value was -1.
-1=No)
Data from the institutional questionnaire were used for this variable. Question A1 reported whether or not the institution
AM: Is Health Insurance
provided health care insurance for its graduate students. If the response to this question was yes, then a value of 1 was
Provided? (1=Yes; -
given to this variable. If it was no, then the value was -1.
1=No)
Question D8 listed 18 different kinds of support activities for doctoral students or doctoral education. This variable is a
AN: Number of Student
count of the number of student support activities provided by the program or the institution.
Activities (Max=18)
Questions B1 and B2, total responses.
Data Not AO: Total Faculty, 2006
Used in
Ranking
Calculated as the number of program faculty corrected for association with multiple programs. For more detail on how
AP: Number of
these data were calculated, refer to footnote 46 in A Data-Based Assessment of Research-Doctorate Programs in the
Allocated Faculty, 2006
United States (2010), Chapter 3, “Study Design.”
Total number of core and new faculty.
AS: Number of Core and
New Faculty, 2006
Question C9 reported the total number of students enrolled in the fall of 2005.
AT: Number of Students
Enrolled, Fall 2005
Question C3 reflects the number of first-time enrolled for 2001-2002, 2002-2003, 2003-2004, 2004-2005, and 2005-
AU: Average Annual
2006. An average was taken over 5 years.
First Year Enrollment,
2002-2006
Question E8 reported the number of students who received support as a research assistant in the fall of 2005. A
AV: Percent of Students
percentage was calculated over the total number of students.
with Research
Assistantships, Fall 2005

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APPENDIX C 65
Question E8 reported the number of students who received support as a teaching assistant in the fall of 2005. A
AW: Percent of Students
percentage was calculated over the total number of students.
with Teaching
Assistantships, Fall 2005
Question E8 reported the number of first year students who received support from an institutional fellowship in the fall
AX: Percent of First
of 2005. A percentage was calculated over the total number of first year students.
Year Students with
Institutional Fellowships
Alone
Question E8 reported the number of first year students who received support from a fellowship or from a traineeship.
AY: Percent of First
These quantities were added together and the percentage that this was of total first year students was calculated.
Year Students with a
Combination of
Fellowships and
Traineeships
Question E8 reported the number of first year students who received support from an internal fellowship or from a
AZ: Percent of First
traineeship. These quantities were added together and the percentage that this was of total first year students was
Year Students with Both
calculated.
Internal Fellowships and
Internal Assistantships
Question E8 reported the number of first year students who received support from more than one internal fellowship.
BA: Percent of First
The percentage that this was of total first year students was calculated.
Year Students with
Multiple Internal
Assistantships
Question D8 reports whether the institution and/or program provides support for doctoral students or doctoral education.
Student BB through BT
Key:
Activities
1= provided for by institution;
2= program support only;
3= both institutional and program support;
4= neither institutional nor program support
Note: This table is taken from the Guide in the Excel table for the Assessment of Research-Doctorate Programs, www.nap.edu/rdp. The letters listed correspond to
column labels for that table.

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