Home Evidence
The evidence base
What this site is built on, topic by topic: how many papers, how many are trials, and how recent. Generated from the harvest, so it cannot drift from the citations themselves.
Publications per topic
A bar chart of the number of publications held on each of the 7 topics covered by this site, largest first.
Total cost of ownership 14 papers Incentives 12 papers Depreciation 11 papers Energy cost 10 papers Car finance 10 papers Insurance 8 papers Transport health 4 papers
Where the evidence sits. The 7 topics below are not equally well studied, and the gap between the largest and smallest is usually the most useful thing on this page. Source: this site’s own citation harvest from PubMed and Crossref.
What the evidence base is made of
A stacked bar showing the proportion of syntheses, randomised trials, cohort studies, reviews and other publication types across the whole corpus.
69 meta-analysis (2) review (1) other (69)
Study type matters more than volume. A hundred observational papers and five randomised trials support very different claims, so the mix is worth reading before the counts. Source: publication types as recorded by PubMed.
14 papers
14 publications — 0 trials, 0 syntheses.
12 papers
12 publications — 0 trials, 0 syntheses.
11 papers
11 publications — 0 trials, 0 syntheses.
10 papers
10 publications — 0 trials, 0 syntheses.
10 papers
10 publications — 0 trials, 0 syntheses.
8 papers
8 publications — 0 trials, 0 syntheses.
4 papers
4 publications — 0 trials, 2 syntheses.
Also from us
Tools and books we publish that are relevant to this page. These are ours — we say so rather than presenting them as neutral picks.
App 🌍 Decarbonr AI carbon tracker — meals, transport and lifestyle as one daily CO₂e number App 🔌 Drive Charge Eat EV trip planner: charge where there's food, restrooms and people App 🌾 Gluten Free Scanner Scan a barcode, get a gluten verdict backed by ingredient data App 🧳 TravelScanning Scan menus and labels abroad in your own language Book 📕 Drive, Charge, Eat Planning long EV journeys around charging reality rather than brochure range. Book 📙 Your Carbon Footprint Where personal emissions actually come from, and which changes move the number. App 🌙 BioClock Sleep Circadian-aware sleep and light tracking App 🩺 CrohnScanning Trigger-food scanning for Crohn's and colitis
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