Outcome | Years, median (IQR) | Period | ||
---|---|---|---|---|
1996–2000 | 2001–2005 | 2006–2010 | ||
Primary | ||||
 Journal articles | 2.3 (1.4–3.7) | 2.5 (1.5–4.2) | 2.8 (1.7–4.4) | 2 (1–2.5) |
Secondary | ||||
 Citation | 3.8 (2.6–5.5) | 4 (3.1–6.1) | 5.2 (2.9–6.8) | 2.7 (1.9–3.8) |
 Conference presentation | 0.7 (0.3–1) | 0.9 (0.6–5.7) | 1 (0.3–1) | 0.6 (–0.7 to 0.8) |
 Thesis report (book) | 2.7 (2.3–3) | 2.6 (1.9–2.7) | 2.7 (2.5–3.3) | 2.7 (2.4–3.1) |
 Dissertation (final book) | 3 (2.8–3.8) | 2.9 (2.6–3.1) | 3 (2.7–3.8) | 3.1 (2.9–4) |
 Dissertation (electronic) | 3.8 (2.8–7.2) | 10.3 (10.5–11.5) | 4.4 (3.4–7.2) | 2.7 (1.9–3.4) |