In the same mobility table, what does a value below 1.0 indicate?

In the same mobility table, what does a value below 1.0 indicate?

• A. The outcome is less likely for sons.
• B. The outcome is more likely for sons.
• C. No association between the categories.
• D. The data are not interpretable.

Answer: (A)

A value below 1.0 in a mobility table signals that the outcome is less likely for the group in question (sons) compared with the reference group. In this kind of table, the figures are relative measures—such as a risk ratio or odds ratio. When the ratio is under 1, it shows a negative association: the event happens less often for sons than for the comparison group. For example, an odds ratio of 0.75 means sons have 25% lower odds of the outcome than the reference group. Values around 1 indicate no difference, while values above 1 indicate higher likelihood for sons. Remember, the precision of this interpretation depends on statistical significance, which requires considering the confidence interval or p-value.

A value below 1.0 in a mobility table signals that the outcome is less likely for the group in question (sons) compared with the reference group. In this kind of table, the figures are relative measures—such as a risk ratio or odds ratio. When the ratio is under 1, it shows a negative association: the event happens less often for sons than for the comparison group. For example, an odds ratio of 0.75 means sons have 25% lower odds of the outcome than the reference group. Values around 1 indicate no difference, while values above 1 indicate higher likelihood for sons. Remember, the precision of this interpretation depends on statistical significance, which requires considering the confidence interval or p-value.