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Fig 1.

Sample Institutions, Percent of U.S. Totals, Selected Variables, 1990–2009.

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Fig 1 Expand

Table 1.

Annual Average Values of Key Variables, by Decade and University Characteristics.

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Table 1 Expand

Fig 2.

Expenditures, Postdoc Researchers, Faculty and Doctorates, Sample Institutions, 1989–2009.

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Fig 2 Expand

Fig 3.

Index of Expenditures and Publications, Sample Institutions, 1990–2009.

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Fig 3 Expand

Fig 4.

Cost per Publication, 1990–2009.

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Fig 5.

Median Total Cost per Publication, 1990–2009.

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Fig 5 Expand

Table 2.

OLS Panel Regressions Determinants of Publications, Citations, and Average Number of Citations per Publication.

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Table 2 Expand

Table 3.

OLS Panel Regressions. Determinants of Publications, Citations, and Average Citations per Publication, by University Type.

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Table 3 Expand

Fig 6.

Year Effects from OLS Regression: Number of Publications, Number of Citations and Number of Citations per Article.

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Fig 6 Expand

Table 4.

First Stage IV Regressions Determinants of Number of Publications.

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Table 4 Expand

Table 5.

IV Regressions. Determinants of Publications, Citations, by University Type. Instruments: Math & Physics Federal R&D, Math and Physics non-federal R&D, Fall Enrollment.

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Table 5 Expand

Fig 7.

Year Effects from IV Regressions on Number of Publications and Citations.

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Fig 7 Expand