Biostatistics & Research · single question
A chart shows vitamin C and periodontitis relationship. Parameter D has OR = 1.8, 95% CI = 3.5–3.9, p < 0.01. How would you characterize this association?
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Correct answer: A. Weak association, statistically significant
✓ A) Weak association, statistically significant is correct.
Odds ratio (OR) interpretation: OR = 1.8 = relatively weak association (close to 1.0; strong associations are typically >3.0 or <0.33). Statistical significance: p < 0.01 and CI that does not cross 1.0 = statistically significant. So: weak effect size (OR 1.8) but statistically significant (p < 0.01). Compare to Parameter C (OR 4.1) = strong association. The combination of a modest OR with statistical significance means the result is real but not clinically dramatic.
Odds ratio (OR) interpretation: OR = 1.8 = relatively weak association (close to 1.0; strong associations are typically >3.0 or <0.33). Statistical significance: p < 0.01 and CI that does not cross 1.0 = statistically significant. So: weak effect size (OR 1.8) but statistically significant (p < 0.01). Compare to Parameter C (OR 4.1) = strong association. The combination of a modest OR with statistical significance means the result is real but not clinically dramatic.
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