Statistics & methodology consulting · theses, dissertations and papers

Your research statistics, solved — ready for your committee and the journal.

You send the question and the spreadsheet; we return the complete analysis — tables, figures and documented methods. No co-authorship: the work remains 100% yours.

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Starting at R$ 300 · up to 12 installments Delivery in 14 days, 7 days or 48 h Quote within 24 business hours

100% your authorship

Methodological consulting, no co-authorship. The credit and the responsibility for the study stay entirely with you.

Privacy by default

Data is uploaded de-identified — the identifiers are stripped in your own browser before anything is sent.

Reporting rigor

Design and analysis aligned with STROBE, CONSORT and PRISMA, ready for your committee and the journal.

Expert endorsement

Led by professionals with postdoctoral training in medicine and research experience across every field of health.

You spent months collecting data. Statistics cannot be what stands between that effort and publication. Evidens takes your work from data to outcome.

48 hfastest (turbo) delivery
24 hbusiness hours to receive your quote
13health fields served
What we do

Services

Individual steps in the order of your study — or a package for your academic moment.

From project to publication

Study designcore

PICOT, design, eligibility criteria, variable list, sample size calculation, statistical plan and reporting checklist (STROBE/CONSORT/PRISMA).

from R$ 800
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Complete statistical analysiscore

You send the de-identified data; we return tests, tables and figures, with the statistical documentation behind your Methods and Results.

R$ 2,000–6,000
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Sample size / pre-project

Sample size, justification and an initial design — the fast entry point for your project.

from R$ 300
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Figures & visual abstract

Forest plot, Kaplan-Meier, ROC, STROBE/PRISMA flow diagrams and a journal-ready visual abstract.

from R$ 300
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Manuscript review

Methodological and statistical review of the IMRaD text, formatting for the target journal and responses to reviewers.

R$ 2,500–6,000
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Translation into English

Translation of your manuscript, abstract or poster from Portuguese into academic English, revised by a researcher in your field using the target journal's terminology.

price on request
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For your moment

Undergraduate thesis (capstone)

Statistical analysis for your capstone project: the right tests for the question, formatted tables, charts and figures ready for the paper and the presentation.

R$ 500–1,500
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Master's / doctoral thesis

Methodological and statistical support for the dissertation/thesis and preparation for the defense.

price on request
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Presentations & slides

We build your presentation for a conference, thesis defense or course finale — delivered in PowerPoint, Canva, PDF or HTML.

price on request
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Simple and secure

How it works

From request to delivery, with a final expert review.

1

Request

Choose the service and the delivery speed, and describe the question, the dataset and the outcome.

2

Send the data

If it is an analysis, upload the spreadsheet — it is de-identified in your own browser before it is uploaded.

3

We produce

Design, analysis and figures, with an expert endorsement.

4

We deliver

You receive material ready for your committee and the journal, within the timeline of the flow you chose — 14 days, 7 days or 48 hours.

Who has used us

Testimonials

What graduate students and researchers say about Evidens's work.

★★★★★
I had the statistical analysis of my doctoral thesis done by the Evidens team. The work was finished in 2 weeks, with excellent quality of tables and charts. I recommend it to every graduate student!
CACarlos A.Doctoral thesis · November 2025
★★★★★
Statistical analysis and help building the slides for my capstone project! Really great!
JCJuliana C.Undergraduate capstone · March 2026
★★★★★
I'm grateful to Evidens for the quick help with my manuscript, with support on study design, methodology and statistical analysis (which I had no idea how to do...).
ABAmanda B.Scientific manuscript · May 2026
★★★★★
The team answers WhatsApp messages right away, the quote came fast and the delivery was exactly as promised. I also want to thank them for the report explaining the statistical tests used in my thesis.
PPatríciaGraduate thesis · September 2026
Investment

Pricing

Indicative values per service; the final quote depends on the complexity of the scope. You choose the delivery speed — the faster the flow, the higher the multiplier on the base price. Theses are quoted on request. Prices are in Brazilian reais (BRL).

Choose the delivery speed

Standardrecommended

14 days
base price

Evidens's normal flow: full rigor at the price shown for each service.

Priority

7 days
+50% on the base price

Your project moves to the front of the queue and is delivered in half the time.

Turbo

48 hours
+100% (double the base price)

Maximum mobilization to deliver within 48 hours, when the scope allows.

The multiplier applies to the quoted value of the service. Turbo deliveries depend on the feasibility of the scope — we confirm it in the quote.

Ethics & data. We work as a methodological consultancy — you are the author and the party responsible for the project and for approval by the Research Ethics Committee. Data is uploaded de-identified (no names, medical record numbers, ID numbers or dates) and is never exposed. We do not seek co-authorship; we suggest declaring the methodological assistance in the acknowledgments.
Let's get started

Request a service

Fill in the form below. We send the quote within 24 business hours — by email or WhatsApp, if provided. Credit card payment in up to 12 installments.

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Have a tracking code? Check the status.

Who we are

About Evidens

Evidens is a methodology and statistics consultancy dedicated to health research. We bring together professionals with postdoctoral training in medicine and experience in study design, biostatistics and scientific reporting best practices to take your project from data to outcome — with reporting rigor (STROBE, CONSORT, PRISMA) and full transparency.

We work as a methodological consultancy, without co-authorship: the authorship, the credit and the responsibility for the study remain with you. We work with graduate students, residents, capstone students and research groups that need solid method and reliable analysis — from project to publication.

We serve research across all fields of health: medicine, nursing, dentistry, nutrition, physical therapy, psychology, physical education, pharmacy, biomedicine, speech-language pathology, occupational therapy, public health and veterinary medicine.

MedicineNursingDentistryNutritionPhysical TherapyPsychologyPhysical EducationPharmacyBiomedicineSpeech-Language PathologyOccupational TherapyPublic HealthVeterinary Medicine
Scientific leadership

Who stands behind the methodology

Two surgeon-researchers with doctoral and postdoctoral training at the University of São Paulo, practicing at ICESP and Hospital Israelita Albert Einstein, with an active record in international journals.

Daniel José Szor
Daniel José Szor
Digestive surgeon · ICESP-HC-FMUSP · Faculty, Faculdade Israelita de Ciências da Saúde Albert Einstein

Medical degree from Santa Casa de São Paulo, with residencies in General Surgery and Digestive Surgery at HC-FMUSP. Board certified in Digestive Surgery and Laparoscopic Surgery (CBCD). PhD (2019) and postdoctoral fellow (2021) in Gastroenterology at the University of São Paulo. CNPq Research Productivity Fellow. Faculty member at Faculdade Israelita de Ciências da Saúde Albert Einstein since 2020, supervising FAPESP-funded undergraduate researchers and co-supervising doctoral theses at FMUSP. Vice-Chair of the SSAT International Outreach Committee, recipient of the SSAT International Junior Surgeon Travel Award (2023), and reviewer for journals such as the Journal of Gastrointestinal Surgery and the Journal of Gastric Cancer. Author of more than 35 indexed articles (h-index 12), with research on gastric oncology and the epidemiology of digestive cancers.

PhD, USPPostdoc, USPCNPq Research FellowSSAT International Junior Surgeon Travel Award 2023FAPESP supervisor
ORCIDLattesGoogle Scholar
Francisco Tustumi
Francisco Tustumi
Digestive surgeon · ICESP · Hospital Israelita Albert Einstein

Medical degree from the University of São Paulo School of Medicine, with residencies in General Surgery and Digestive Surgery at HC-FMUSP. MSc (2018), PhD (2021) and postdoctoral fellow (2024) in Gastroenterology at USP. Board certified in Digestive Surgery and Surgical Oncology (CBCD) and in Bariatric Surgery (SBCBM). General Surgery preceptor at Einstein and supervisor of FAPESP-funded undergraduate research. Full member of CBCD and CBC, and member of SBCO, SSAT, ISDE and ESDE. Author of more than 180 indexed articles (h-index 28), focused on research methodology, systematic reviews and meta-analyses. Recipient of the SSAT Andrew L. Warshaw Master Educator Award (2024), the first Brazilian to receive it, the Daher Cutait Young Surgeon Award (CBC) and the CBCD Young Digestive Surgeon Award (2023).

PhD, USPPostdoc, USPWarshaw Master Educator Award 2024Daher Cutait Awardh-index 28
ORCIDLattesGoogle Scholar
Scientific output

Recent publications

0 indexed articles
Europe PMC · updated monthly · see all

Evidens provides scientific advisory services: analysis, tables, figures and methodological documentation. Writing and authorship remain with the researcher.

Frequently asked questions

Questions and answers

The most common questions from people hiring statistical consulting.

Do you become co-authors of my work?

No. Evidens works as a methodological consultancy, without co-authorship. The authorship and the scientific responsibility remain entirely yours. We only suggest declaring the methodological assistance in the acknowledgments, if you wish.

Is it ethical to use statistical consulting in my research?

Yes. Methodological and statistical support is a common and accepted practice in science. You remain the author and the party responsible for the project and for approval by the Research Ethics Committee. We deliver the method and analysis with transparency, so that you understand and can defend every result.

How does data upload work? Is it secure?

You upload the spreadsheet through the site itself. The identifiers (name, medical record number, ID number, dates) are removed in your own browser, before anything is sent — only the de-identified data reaches us, and it is never publicly exposed.

How much does it cost and how do I pay?

The value depends on the service and the complexity of the scope; indicative prices are in the Pricing section. You also choose the delivery speed (standard, priority or turbo), with a multiplier on the base price. We reply with the quote by email and payment is arranged simply — bank transfer or credit card in up to 12 installments, via payment link.

How long until I receive it?

You choose the flow: standard in 14 days (base price), priority in 7 days (+50%) or turbo in 48 hours (+100%, depending on the feasibility of the scope). We confirm the timeline in the quote.

Which designs and analyses do you cover?

Observational and experimental studies, clinical trials, systematic reviews and meta-analyses, survival analysis (Kaplan-Meier, Cox), regression models, diagnostic accuracy (ROC), nomograms and more. See the Examples section for the standard of figures and tables we deliver.

Do you help with undergraduate capstone projects?

Yes. We have a specific service for capstone projects: choosing the right tests for your question, formatted tables and figures ready for the paper and the presentation.