Table 1. Grant, principal investigator and paper characteristics according to grant percentile ranking.
| Characteristic | Best (0–5) | Middle (5.1–15) | Worst (415) |
|---|---|---|---|
|
|
|
|
|
| N = 398 | N = 807 | N = 550 | |
| Grant percentile ranking | 1.3/2.7/3.8 | 7.4/10.0/12.5 | 16.7/19.3/23.3 |
| Type of submission | |||
| A0 | 18% (72) | 26% (207) | 33% (179) |
| A1 | 46% (185) | 45% (362) | 43% (238) |
| A2 | 35% (138) | 29% (233) | 24% (131) |
| A3 | 1% (3) | 1% (5) | 0% (2) |
| Priority score | 124/132/140 | 140/150/160 | 160/170/183 |
| Total grant award ($M) | 1.4/1.8/2.8 | 1.1/1.7/2.6 | 1.1/1.6/2.5 |
| Institutional funding ($M) | 13.5/35.8/73.2 | 10.3/23.7/64.0 | 9.7/26.4/70.9 |
| Project duration (years) | 5.0/5.9/6.9 | 4.9/5.8/6.7 | 4.9/5.8/6.6 |
| Basic (versus applied) | 61% (243) | 62% (504) | 65% (358) |
| Human subjects | 63% (251) | 60% (486) | 56% (306) |
| Animal subjects | 32% (128) | 36% (292) | 39% (213) |
| Early stage investigator | 2% (8) | 1% (11) | 2% (9) |
| PI degree | |||
| MD or equivalent | 21% (83) | 20% (160) | 18% (100) |
| MD/PhD | 9% (36) | 8% (63) | 10% (54) |
| PhD or equivalent | 70% (279) | 72% (584) | 72% (396) |
| Academic rank | |||
| Assistant | 21% (85) | 25% (198) | 30% (167) |
| Associate | 24% (95) | 22% (180) | 21% (117) |
| Full | 37% (147) | 36% (291) | 29% (162) |
| None | 18% (71) | 17% (138) | 19% (104) |
| Prior NIMH normalized citation impact | 0.84/2.87/7.66 | 0.75/2.61/6.28 | 0.52/2.10/5.69 |
| Prior study section meetings | 0/3/8 | 0/2/9 | 0/1/5 |
| Prior NIH grant funding ($K) | 146/1097/3368 | 43/816/3502 | 0/553/2063 |
| Prior project-years of funding | 2/7/18 | 1/6/17 | 0/5/12 |
| Mean number of authors per paper | 3.5/4.6/6.2 | 3.5/4.8/6.3 | 3.4/4.7/6.1 |
| Mean grants cited per paper | 2.2/3.7/5.8 | 2.1/3.4/5.2 | 2.0/3.2/4.8 |
Abbreviations: NIH, National Institutes of Health; NIMH, National Institute of Mental Health; PI, Principal Investigator. Continuous variables are represented as a/ b/c, with a the lowest quartile, b the median and c the upper quartile. Categorical variables are represented as % (N).