2.0(top 20%)
2-year impact
5.4K(top 5%)
PR articles
112.3K(top 5%)
PR citations
105(top 5%)
PR h-index
117(top 5%)
h-index
2.0(top 20%)
2-YI (no self-cite.)
97 days (top 20%)
pub. speed
155.4K
doc citations
These checks describe how Parkinsonism and Related Disorders's record is put together. Each one states what it measured and where the line was drawn, so a verdict can be argued with. They are not combined into a single score, and a check marked Watch or Concern is a reason to look closer, not a finding of misconduct.
Citation integrity OK
OKSelf-citation share of 2-year impact2.9%
How much of the 2-year impact comes from the journal citing itself. Both figures use the same denominator, so this is the exact share, not an estimate. — 2.02 with self-citations, 1.96 without
OKSelf-citation share of 3-year impact3.3%
The same measure over a three-year citation window. — 2.16 with self-citations, 2.08 without
OKSelf-citation share of 5-year impact3.5%
The same measure over a five-year citation window. — 2.23 with self-citations, 2.16 without
OKSelf-citation share of 10-year impact3.6%
Over ten years a journal's own back catalogue is its most available source of citations, so a higher share here is normal. — 2.19 with self-citations, 2.11 without
OKJournal self-citation rate4.9%
The share of all citations received that came from articles in this same journal, across the whole record rather than one impact window.
OKAuthor self-citation rate10.2%
The share of citations whose citing paper shares an author with the paper it cites. Papers with more than 100 authors are excluded from both sides, because a large collaboration shares an author with almost everything it cites.
OKSelf-citation trendsteady
Whether the journal self-citation rate has been rising or falling over the last five years.
Publication record Watch
WatchRetraction notices per 1,000 articles2.97
Retraction notices published by this journal, against its peer-reviewed output. Some retractions are a sign of a journal correcting the record; a high rate is a sign of what got in. — 17 retraction notices across 5725 peer-reviewed articles
Trajectory Watch
Watch2-year impact trenddeclining 27%
Direction of the 2-year impact over the last five available years.
Watch5-year impact trenddeclining 24%
Direction of the 5-year impact over the last five available years.
OKScore D trendsteady
Direction of Score D, the prestige-weighted citation ratio, over the last five available years.
OKScore D tierTier 2 of 5
Where the journal's latest Score D places it among all journals ranked that year. Tier 1 is the top 5%, Tier 2 the top quarter, Tier 3 the top half, Tier 4 the top three quarters. — Score D 0.45, ranked 6512 of 32192 journals in 2025
Output and reach OK
OKPublication speed97 days
Median days from submission to publication over the last three years, from the dates the publisher states on the article. — median across 2024-2026; the corpus median is 156 days
OKUncited share13.9%
The share of the journal's peer-reviewed articles that have never been cited. Across the whole database the median journal sits near 56%, because most journals are small, specialised or recent, so this is flagged only against the corpus: above 85% is the worst quarter and above 96% the worst tenth. — 796 of 5725 peer-reviewed articles have never been cited
OKOutput volume trendsteady
Whether the number of articles published per year has been growing or shrinking. A sudden multiplication of output is worth understanding before submitting.
OKUnusual increase in country participation0
Number of recent top-ten countries passing both the field-reference and historical-increase screens. Country coverage and the reference ranges are shown below. — No unusual increase detected
OKSubject breadth2
How many disciplines the journal is classified under. A very wide scope is normal for a megajournal and unusual for a specialist title. — classified under 2 disciplines
OKNational quality levelLevel 1
The journal's level under the national research-assessment classification. Level 1 is the base listing; level 2 is considered high quality within its field and level 3 the most selective tier. Only about 2% of listed journals reach level 2 or 3. — level 1, the base listing rather than a quality tier
OKOpen-access share0.9%
The share of the journal's peer-reviewed articles published under an open licence, out of those whose licence could be read from the article itself. Articles with no licence statement are left out of both sides rather than counted as closed, so a journal with thin coverage shows a figure over a small denominator, not a low one. — 49 of 5703 articles with a readable licence; 31 under a licence permitting reuse
OKData available to download8.8%
The share of peer-reviewed articles, reviews excluded, whose underlying data can be downloaded rather than only requested. Counted from the article's own data-availability statement and the data files deposited with it. — 65 of 741 articles; a further 61 supply data on request
Author-country reference
No unusual increase detected. Reference: 62 other journals sharing a discipline, national quality levels 1–3. Each journal has equal weight; zero country shares are included. A Watch requires at least 30 recent papers from the country, a share at least 5 percentage points above the peer 95th percentile, and a rise of at least 15 points over dated papers before 2024. Both periods need 100 country-attributed papers and 80% country coverage, with coverage differing by no more than 10 points. These are screening thresholds, not a finding about journal quality. Stable national concentration is context.
2024–2026: 476 of 529 papers have country affiliations (90.0%). Shares use these papers and their 2,516 citations; countries overlap.
Dated papers before 2024: 4,296 of 4,831 papers have country affiliations (88.9%). Shares use these papers and their 123,639 citations; countries overlap.
| Country | Recent papers | Recent share | Earlier share | Change | Peer median | Peer 95th percentile | Screen |
|---|---|---|---|---|---|---|---|
| United States | 160 | 33.6% | 31.4% | +2.2 pp | 31.4% | 66.4% | No unusual increase |
| China | 69 | 14.5% | 6.0% | +8.5 pp | 12.9% | 47.2% | No unusual increase |
| Italy | 63 | 13.2% | 12.7% | +0.5 pp | 5.2% | 21.8% | No unusual increase |
| United Kingdom | 40 | 8.4% | 11.3% | -2.9 pp | 8.8% | 27.1% | No unusual increase |
| Canada | 34 | 7.1% | 7.2% | -0.0 pp | 5.9% | 17.6% | No unusual increase |
| Japan | 28 | 5.9% | 6.8% | -1.0 pp | 4.0% | 12.0% | No unusual increase |
| Germany | 27 | 5.7% | 9.4% | -3.7 pp | 5.6% | 26.5% | No unusual increase |
| Spain | 21 | 4.4% | 5.2% | -0.8 pp | 2.6% | 10.0% | No unusual increase |
| India | 20 | 4.2% | 2.2% | +2.0 pp | 2.4% | 10.3% | No unusual increase |
| South Korea | 20 | 4.2% | 4.7% | -0.5 pp | 1.3% | 4.1% | No unusual increase |