A researcher is comparing mean blood glucose levels among three groups of patients receiving different dietary interventions. Which statistical test is MOST appropriate assuming normal distribution?

• A Independent samples t-test
• B Paired t-test
• C Wilcoxon signed-rank test
• D One-way ANOVA ✓

Explanation

One-way ANOVA (Analysis of Variance) is used to compare means across three or more independent groups with continuous normally distributed data. Independent t-test compares only two groups; paired t-test is for matched/before-after data; Wilcoxon signed-rank is the non-parametric equivalent of the paired t-test.

Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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