These published papers support the videos of this level. All are free to read online; open each link in your browser. Papers are in their original language.
1. Jeon CY, Murray MB. Diabetes mellitus increases the risk of active tuberculosis: a systematic review of 13 observational studies. PLoS Med. 2008;5(7):e152.
Free full text: https://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.0050152
Why read it: The global evidence behind the Level 1 case study: people with diabetes have about three times the risk of active TB. Notice how a systematic review builds knowledge others can use.
2. Baker MA, Harries AD, Jeon CY, Hart JE, Kapur A, Lönnroth K, et al. The impact of diabetes on tuberculosis treatment outcomes: a systematic review. BMC Med. 2011;9:81.
Free full text: https://bmcmedicine.biomedcentral.com/articles/10.1186/1741-7015-9-81
Why read it: Shows why the case-study team cared about treatment outcomes: diabetes is linked to worse TB outcomes. A good model of a rationale built on existing evidence.
3. Evans JA, Shim JM, Ioannidis JPA. Attention to local health burden and the global disparity of health research. PLoS One. 2014;9(4):e90147.
Free full text: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0090147
Why read it: Evidence that research effort does not match where the disease burden is. It supports the Video 1.4 argument for locally generated evidence in low- and middle-income settings.
4. Chan AW, Tetzlaff JM, Gøtzsche PC, Altman DG, Mann H, Berlin JA, et al. SPIRIT 2013 explanation and elaboration: guidance for protocols of clinical trials. BMJ. 2013;346:e7586.
Free full text: https://www.bmj.com/content/346/bmj.e7586
Why read it: The international reference for what a protocol should contain. Skim the checklist and match its items to the six core components.
5. Baily MA, Bottrell M, Lynn J, Jennings B. The ethics of using QI methods to improve health care quality and safety. Hastings Cent Rep. 2006;36(4):S1-40.
Free full text: https://www.thehastingscenter.org/wp-content/uploads/The-Ethics-of-Using-QI-Methods.pdf
Why read it: A landmark report on where quality improvement ends and research begins, and what ethical oversight each needs. Read the summary and the section on distinguishing QI from research.