Metodologi Penilaian Bukti
Bagaimana kami mengevaluasi dan menilai penelitian suplemen.
Setiap klaim bahan-kondisi di situs kami menerima peringkat huruf (A hingga F) berdasarkan keseluruhan bukti yang tersedia dan telah ditinjau sejawat. Halaman ini menjelaskan secara tepat bagaimana kami menentukan setiap peringkat — metodologi kami transparan dan dapat direproduksi.
Definisi Peringkat
Strong Evidence
Multiple high-quality randomized controlled trials (RCTs) or meta-analyses with consistent positive results. Combined sample size exceeds 500 participants across 5 or more independent studies.
Contoh: Melatonin for sleep onset latency — supported by 20+ RCTs with consistent results.
Moderate Evidence
At least one well-designed RCT showing positive results, supported by additional studies. Results are mostly consistent across the evidence base, with adequate combined sample sizes.
Contoh: Magnesium for sleep quality — supported by several RCTs with mostly positive outcomes.
Limited Evidence
Preliminary positive findings from small RCTs, observational studies, or mixed results across studies. Evidence is promising but insufficient to draw firm conclusions.
Contoh: L-theanine for sleep — small positive studies exist but larger trials are needed.
Preliminary Evidence
Only in vitro, animal, case report, or pilot study data available. Or human studies exist but with inconsistent or inconclusive results. More research is needed.
Contoh: Ashwagandha for hair growth — limited to preclinical and small pilot studies.
Negative Evidence
Fewer than 30% of studies show positive effects, with two or more studies available. The weight of evidence suggests the ingredient does not provide the claimed benefit, or may cause harm.
Contoh: An ingredient where multiple RCTs show no benefit over placebo.
Algoritma Penilaian
Peringkat bukti dihitung dari empat dimensi penilaian independen, masing-masing berkontribusi pada skor kumulatif yang dipetakan ke peringkat huruf.
| Dimensi | Rentang Skor | Deskripsi |
|---|---|---|
| Kualitas Jenis Studi | 0–4 | Jenis studi berkualitas tertinggi: Meta-Analysis (4), RCT (3), CCT/Kohort (2), Observasional (1), In Vitro/Review (0) |
| Konsistensi | -1 to +1 | >70% hasil positif: +1, <30% positif: -1, selainnya 0 |
| Ukuran Sampel | -1 to +1 | Total peserta: ≥500 (+1), ≥100 (0), <100 (-1) |
| Jumlah Studi | -1 to +1 | Jumlah studi: ≥5 (+1), ≥2 (0), <2 (-1) |
Pemetaan peringkat akhir: Skor ≥6 → A, ≥4 → B, ≥2 → C, ≥0 → D. Dipaksa F ketika <30% positif dengan ≥2 studi.
Proses Penelitian
Systematic Search
Identify relevant research from PubMed
For each ingredient-condition pair, we conduct systematic PubMed searches using MeSH terms and title/abstract keywords. We prioritize randomized controlled trials (RCTs), meta-analyses, and systematic reviews, while also including observational studies and pilot trials for emerging evidence.
Paper Screening
Filter for relevance and quality
Retrieved papers are screened for relevance to the specific ingredient-condition relationship. We filter by study type (prioritizing interventional over observational), population (human studies preferred), and publication quality (peer-reviewed journals only).
PICO Extraction
Extract structured study data
From each included study, we extract structured PICO data: Population (sample size, demographics), Intervention (substance, dosage, duration, form), Comparison (placebo or active comparator), and Outcome (primary endpoint, effect size, statistical significance). AI-assisted extraction is validated against source text.
Evidence Grading
Calculate algorithmic grade (A-F)
Our grading algorithm scores each ingredient-condition pair based on four dimensions: (1) highest study type quality, (2) consistency of positive results across studies, (3) total combined sample size, and (4) number of independent studies. The final score maps to a letter grade from A (Strong) to F (Negative).
Publication
Review and publish evidence summaries
Generated evidence summaries undergo compliance review for FDA/FTC adherence. All language uses structure/function claims only. Evidence grades are recalculated automatically when new research is added to the database, ensuring grades reflect the most current body of evidence.
Sumber Data
Keterbatasan
Metodologi kami memiliki keterbatasan yang diketahui dan harus diperhatikan oleh pengguna:
- Kami terutama mencari di PubMed, yang mungkin tidak mencakup semua penelitian yang relevan (misalnya, studi yang diterbitkan di jurnal yang tidak terindeks).
- Ekstraksi data berbantuan AI, meskipun telah divalidasi, sesekali dapat salah menginterpretasikan desain studi yang kompleks.
- Algoritma penilaian kami memberikan bobot yang sama untuk jumlah studi dan ukuran sampel, yang mungkin tidak mencerminkan kepentingan sebenarnya dari setiap faktor untuk setiap konteks.
- Peringkat bukti mencerminkan kondisi penelitian terkini dan dapat berubah seiring diterbitkannya studi baru.
- Respons individu terhadap suplemen bervariasi. Peringkat bukti yang tinggi tidak menjamin efektivitas untuk setiap individu.
Penafian FDA: Pernyataan-pernyataan ini belum dievaluasi oleh Food and Drug Administration. Produk dan informasi di situs web ini tidak dimaksudkan untuk mendiagnosis, mengobati, menyembuhkan, atau mencegah penyakit apa pun. Peringkat bukti yang disajikan didasarkan pada analisis kami terhadap penelitian yang ditinjau sejawat dan tidak merupakan saran medis. Selalu konsultasikan dengan penyedia layanan kesehatan Anda sebelum memulai regimen suplemen apa pun.