A Living Meta-Analysis of the Modafinil Literature

Manual synthesis cannot keep pace with a fast-growing research literature, and ad-hoc reviews bind no evidence to a reproducible pipeline. We present a configurable, reproducible meta-analysis framework that takes a single search term and produces a complete quantitative portrait of its literature. For this instance the term is Modafinil. The pipeline dispatches across 7 literature engines (arXiv, OpenAlex, Semantic Scholar, Crossref, PubMed, SovietRxiv, and ChinaRxiv), each degrading gracefully to a skipped source when an API key or the network is unavailable, then merges and de-duplicates records by a canonical identifier hierarchy (DOI $>$ arXiv ID $>$ Semantic Scholar ID $>$ OpenAlex ID $>$ title digest) into a corpus of $N = 2302$ records spanning 2000--2026 (26 years). Records are classified into a configurable 6-bucket subfield taxonomy (Clinical Sleep, Cognition, Pharmacology, Psychiatry, Safety, and Neuroscience); the largest subfield is Clinical Sleep (64.3\% of the classified corpus). The corpus grows at a compound annual rate of 3.45\% (mean year-over-year growth 6.3\%, doubling time 11.3 years), peaking in 2025 with 112 records. Non-negative matrix factorization extracts 5 latent topics over a 500-feature vocabulary, offline deterministic embeddings place every title, abstract, and (when available) full text in a shared vector space, and citation-network analysis exposes the corpus's internal structure (8,772 intra-corpus edges across 2204 nodes, 1377 communities, graph density 0.18\%). Of 38,802 total outgoing references, 22.6\% resolve to another record inside the corpus. Abstract coverage stands at 55.5\%, open-access status is known for 14.4\% of records, and 40.9\% have a direct PDF link. An optional, LLM-gated knowledge-graph stage scores the 6 hypotheses explored against the evidence. This run produced 18 publication-quality figures. Every domain-specific value in this manuscript — the search term, keyword set, engine roster, subfield taxonomy, and hypotheses — is injected from a single configuration file and the pipeline's own outputs; re-targeting the configuration re-targets the entire paper. The result is a reusable architecture for living literature reviews: continuously re-runnable, evidence-bound syntheses for any topic. Keywords: modafinil, meta-analysis, literature retrieval, bibliometrics, record de-duplication, full-text mining, document embeddings, citation network, topic modeling, entity extraction, wakefulness, cognitive enhancement, reproducible research --- Associated artifacts GitHub release: v0.1.0 (https://github.com/docxology/template_literature_meta_analysis/releases/tag/v0.1.0) DOI: https://doi.org/10.5281/zenodo.20931964 Zenodo: https://zenodo.org/records/20931964 PDF SHA-256: 412d4fcf4b0c2e14fb950f9080f107d81fd9a90dfdf216b9161a13833eff62ff