A study is conducted to estimate the association between exposure to lead paint in childhook and ADHD. Data on n=400 children are collected and shown in table 9-13 for parts A and B.
A) Estimate the crude or unadjusted relative risk.
B) Estimate the crude or unadjusted odds ratio.
Table 9-26:
Exposure to lead paint ADHD No ADHD
Yes 34 71
No 29 266

use table 9-27 for parts C and D:
C) Determine the realitive risk and odds ratios for a child’s diagnosis of ADHD relative to exposure to lead paint, stratified by the father’s diagnosis with and without ADHD.
D) How do the results in part C compare to the results from parts A and B?
Table 9-14:
Fathers with ADHD
Exposure to Lead Paint ADHD No ADHD
Yes 27 39
No 29 266
Fathers without ADHD
Exposure to lead paint ADHD No ADHD
Yes 7 32
No 22 229

Part E) Use the Data from parts A-D to conduct tests of hypothesis to determine whether the father’s diagnosis of ADHD is a confounder (fathers diagnosis and child’s exposure, father’s diagnosis and child’s diagnosis). Is the father’s diagnosis of ADHD a confounder? Justify your conclusion.