Question: A study was conducted to estimate the association between exposure to lead paint in childhood and attention-deficit hyperactivity disorder (ADHD). Data on N=750 children are
A study was conducted to estimate the association between exposure to lead paint in childhood and attention-deficit hyperactivity disorder (ADHD). Data on N=750 children are collected, and data on exposure and ADHD diagnosis are shown in the Table
| Expose to lead paint | attention-deficit hyperactivity disorder ADHD | |
| Yes | No | |
| Yes | 53 | 197 |
| No | 71 | 429 |
Use the data to calculate:
- The incidence of ADHD in the exposed group?
- The incidence of ADHD in the unexposed group?
- Estimate the relative risks (RR) for a child's diagnosis of ADHD relative to exposure to lead paint: (0.5 point for the formula + 0.5 point for the result)
- Based on the computed test statistic in question 3, what is your interpretation?
What is your interpretation if the result in question for is equal to 1 RR=1
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