Phụ lục D: Tài liệu tham khảo

• Altman DG, Bland JM. "How to obtain the confidence interval from a P value." BMJ 2011;343:d2090.
• Gardner MJ, Altman DG. "Confidence intervals rather than P values: estimation rather than hypothesis testing." BMJ 1986;292:746–750.
• Sim J, Reid N. "Statistical inference by confidence intervals: issues of interpretation and utilization." Phys Ther 1999;79:186–195.