IOP

#20 publisher

89 journals covered

3,674
Positions
3,175
Editors
89
Journals
70
Countries
26.8
Mean h-index
29%
Open access

IOP ranks #20 among 48 publishers. 3,674 positions across 89 journals. 3,175 editors. 28.1% female (below avg 33%). Mean h-index: 26.8 (above avg 22.5). 29% open access.

Gender distribution

Gender-inference coverage: 78.1% of editors here have an inferred gender — the 28.1% figure understates uncertainty for the unclassified remainder.

Male
1,785
Female
696
Unknown
694

28.1% female · 71.9% male (of 2,481 resolved; global avg 33%)

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
16.1% 512
China
14.7% 468
United Kingdom
6.8% 216
Japan
4.4% 139
Germany
3.5% 112
Russia
2.9% 92
India
2.6% 84
Italy
2.4% 77
Canada
2.0% 65
South Korea
2.0% 64

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).

0.696
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.
0.768
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.
0.353
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 83% of the editors with a known institution type 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 15–36 yr (spread 21 yr), mean 28 yr, n = 1,781. A low median with a small IQR indicates a board clustered in one career stage; a large IQR signals generational mix.