PeerJ

#32 publisher

2 journals covered

1,884
Positions
1,842
Editors
2
Journals
78
Countries
25
Mean h-index
100%
Open access

PeerJ ranks #32 among 48 publishers. 1,884 positions across 2 journals. 1,842 editors. 32.8% female (below avg 33.7%). Mean h-index: 25 (above avg 22.7). 100% open access.

Gender distribution

Male
962
Female
469
Androgynous
64
Unknown
347

32.8% female · 67.2% male (of 1,431 resolved; global avg 33.7%)

Each editor counted once at this entity (composite identity key). Gender is inferred from the first name — not self-reported — and coverage drops for non-Latin-script names, which inflates the "unknown" bar in some countries.

Top countries

United States
21.2% 390
United Kingdom
6.6% 122
Italy
6.2% 114
Australia
4.0% 74
Spain
3.5% 64
Brazil
2.9% 54
Canada
2.9% 53
Germany
2.6% 47
China
2.4% 44
France
1.6% 30

Board diversity

Per-editor diversity indicators. Each editor is counted once (composite identity key). The Shannon columns use Pielou's normalisation J = H / ln(k) so values are comparable across entities with different numbers of categories. See the methodology for full definitions, use cases, and references (Shannon 1948; Pielou 1966; Jost 2006).

0.702
Pielou's J over ROR country distribution. 0 = all editors from one country, 1 = perfectly even across every country present. MDPI sits higher than Elsevier here; compare against the top-countries bar to see which countries drive the spread.
0.580
Pielou's J over OpenAlex scientific fields. High values mean this entity's editors span many disciplines (a broad multidisciplinary footprint); low values mean they cluster in one field. Especially informative for institution pages, where the country and org_type Shannons are trivially zero.
0.296
Pielou's J over the ROR org_type field (education, healthcare, facility, government, nonprofit, company, archive). Low values mean editors come overwhelmingly from one kind of institution — usually universities, which account for about 82% of editors dataset-wide. Higher values indicate editorial boards that reach into clinical practice, public labs, industry, or scientific societies.
25 yr
Median years since first OpenAlex-indexed publication, per unique editor. IQR 14–38 yr (spread 24 yr), mean 30.1 yr, n = 1,142. A low median with a small IQR indicates a board clustered in one career stage; a large IQR signals generational mix.