• Örtqvist, Anne Kristina, et al. \"Familial factors do not confound the associa

Question

• Örtqvist, Anne Kristina, et al. "Familial factors do not confound the association between birth weight and childhood asthma." Pediatrics 124.4 (2009): e737-e743.

Assuming the final estimates in Table 3 are accurate, why would the odds ratios be much higher in monozygotic vs dizygotic twins?

A. There are parental behavioral confounders that increase the association between low birth weight and the development of asthma.

B. The difference is due to the difference in BMI and or exercise

C. There are genetic confounders/child development confounders that diminish the observed association between low birth weight and the development of asthma.      

D.    The small sample size in the monozygotic twins led to spurious results.

Explanation / Answer

From the given information ( you have not provided table 3)

the answer is choice D

since in questions says familiar factors are not confounded so answer is not choice A

There is no information regrarding BMI.exercise in this problem, so B is not the coice.

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