Factors associated with knowledge of p-value in a sample of medical students




Palabras clave:

conocimiento, asociación, estadística y datos numéricos, estudiantes


Introduction: The role of p-value knowledge for clinical practice is elemental; however, insufficient evidence on this is found in health science students. Objective: To determine the factors associated with p-value knowledge in human medical students. Methods: Analytical cross-sectional study. Application of a virtual survey to human medicine students from different faculties in Peru. Results: 54.69% had sufficient knowledge of p-value. The multivariate analysis found a statistically significant association with having sufficient knowledge on this topic in those who were between 6th to 9th semester (APr: 1.118; 95% CI 1.051 - 1.412; p=0.009) and medical internship (APr: 1.234; 95% CI 1.073 - 1.418; p=0.003); taking an external course in biostatistics, epidemiology or research (APr: 1.420; 95% CI 1.227 - 1.643; p<0.001); having read 6 to 12 articles per year (APr: 1.353; 95% CI 1.196 - 1.530; p<0.001) and more than 12 articles per year (APr: 1.590; 95% CI 1.313 - 1.967; p<0.001); and publishing at least one scientific article (APr: 1.397; 95% CI 1.199 - 1.628; p<0.001) or more than one (APr:1.424; 95% CI 1.196 - 1.696; p<0.001). Conclusion: It was found that the academic semester, having taken an external course, having read more than 6 articles per year and having published at least one scientific article are independently associated with having greater understanding of this topic.


Los datos de descargas todavía no están disponibles.


Mendoza C. El Valor P en Epidemiología. Revista Chilena de Salud Pública. 2006;10(1):47–51. URL.

Kain Z, MacLAren J. Valor de p inferior a 0,05: ¿qué significa en realidad? Pediatrics. 2007;63(3):118–120. URL.

Andreu MF, Ballve LPD, Verdecchia DH, Monzón AM, Carvalho TD de. Is the p-value properly interpreted by critical care professionals? Online survey. Rev Bras Ter Intensiva. 2021;33(1):88–95. https://doi.org/10.5935/0103-507X.20210009

Horton NJ, Switzer SS. Statistical methods in the journal. N Engl J Med. 2005;353(18):1977–1979. https://doi.org/10.1056/NEJM200511033531823

Araoz-Melgarejo VA, Espinoza BM, Quiñones-Laveriano DM, Cruz-Vargas JADL. Basic knowledge and attitudes towards biostatistics in sixth- and seventh-year medical students. Turkish Journal of Computer and Mathematics Education (TURCOMAT). 2021;12(14):1286–1302. URL.

Windish DM, Huot SJ, Green ML. Medicine residents’ understanding of the biostatistics and results in the medical literature. JAMA. 2007;298(9):1010–1022. https://doi.org/10.1001/jama.298.9.1010

Polychronopoulou A, Eliades T, Taoufik K, Papadopoulos MA, Athanasiou AE. Knowledge of European orthodontic postgraduate students on biostatistics. Eur J Orthod. 2011;33(4):434–440. https://doi.org/10.1093/ejo/cjq098

Taylor RS, Reeves BC, Ewings PE, Taylor RJ. Critical appraisal skills training for health care professionals: a randomized controlled trial [ISRCTN46272378]. BMC Med Educ. 2004;4(1):30. https://doi.org/10.1186/1472-6920-4-30

Ganasegeran K, Ch’ng ASH, Jamil MFA, Looi I. Clinicians’ Perceived Understanding of Biostatistical Results in the Medical Literature: A Cross-Sectional Study. Medicina (Kaunas). 2019;55(6):E227. https://doi.org/10.3390/medicina55060227

Msaouel P, Kappos T, Tasoulis A, Apostolopoulos AP, Lekkas I, Tripodaki E-S, et al. Assessment of cognitive biases and biostatistics knowledge of medical residents: a multicenter, cross-sectional questionnaire study. Med Educ Online. 2014;19:23646. https://doi.org/10.3402/meo.v19.23646

Alzahrani SH, Aba Al-Khail BA. Resident physician’s knowledge and attitudes toward biostatistics and research methods concepts. Saudi Med J. 2015;36(10):1236–1240. https://doi.org/10.15537/smj.2015.10.11842

Best AM, Laskin DM. Oral and maxillofacial surgery residents have poor understanding of biostatistics. J Oral Maxillofac Surg. 2013;71(1):227–234. https://doi.org/10.1016/j.joms.2012.03.010

Couture F, Nguyen D-D, Bhojani N, Lee JY, Richard PO. Knowledge and confidence level of Canadian urology residents toward biostatistics: A national survey. Can Urol Assoc J. 2020;14(10):E514–19. https://doi.org/10.5489/cuaj.6495

Badenes-Ribera L, Frias-Navarro D, Iotti B, Bonilla-Campos A, Longobardi C. Misconceptions of the p-value among Chilean and Italian Academic Psychologists. Front Psychol. 2016;7:1247. https://doi.org/10.3389/fpsyg.2016.01247

Badenes-Ribera L, Frías-Navarro D, Monterde-i-Bort H, Pascual-Soler M. Interpretation of the p value: A national survey study in academic psychologists from Spain. Psicothema. 2015;27(3):290–295. https://doi.org/10.7334/psicothema2014.283

Lecoutre M-P, Poitevineau J, Lecoutre B. Even statisticians are not immune to misinterpretations of Null Hypothesis Tests. International Journal of Psychology. 2003;38(1):37–45. https://doi.org/10.1080/00207590244000250

Lakens D. The Practical Alternative to the p Value Is the Correctly Used p Value. Perspect Psychol Sci. 2021;16(3):639–48. https://doi.org/10.1177/1745691620958012

OJEDA HS MM. Problems and challenges of teaching biostatistics to medical students and professionals. Medical Teacher. 1999;21(3):286–288. https://doi.org/10.1080/01421599979545

Chima SC, Nkwanyana NM, Esterhuizen TM. Impact of a short biostatistics course on knowledge and performance of postgraduate scholars: Implications for training of African doctors and biomedical researchers. Niger J Clin Pract. 2015;18 Suppl:S62-70. https://doi.org/10.4103/1119-3077.170818

Kiekkas P, Panagiotarou A, Malja A, Tahirai D, Zykai R, Bakalis N, et al. Nursing students’ attitudes toward statistics: Effect of a biostatistics course and association with examination performance. Nurse Educ Today. 2015;35(12):1283–1288. https://doi.org/10.1016/j.nedt.2015.07.005






Artículos Originales

Artículos más leídos del mismo autor/a