Question

A recent study found that the death rate for people who sleep 6 to 7 hours per night is lower than the death rate for people who sleep 8 or more hours. The 1.1 million observations used for this study came from a random survey of Americans aged 30 to 102. Each survey respondent was tracked for 4 years. The death rate for people sleeping 7 hours was calculated as the ratio of the number of deaths over the span of the study among people sleeping 7 hours to the total number of survey respondents who slept 7 hours. This calculation was then repeated for people sleeping 6 hours, and so on. Based on this summary, would you recommend that Americans who sleep 9 hours per night consider reducing their sleep to 6 or 7 hours if they want to prolong their lives? Why or why not? Explain. Which of the following variables are likely useful to add to the regression to control for important omitted variables?
A. Type of employment.
B. Indicator for chronic illness.
C. Drug or alcohol use.
D. Individual eye color.

Answer 1

Type of employment, indicator for chronic illness, drug, or alcohol use these variables are likely useful to add to the regression to control for important omitted variables.

What is sleep pattern?

The word sleep pattern, commonly referred to as a sleep-wake pattern, refers to a person's schedule for going to bed and getting up as well as their napping habits. The frequency and length of sleep disruptions may also be part of the sleep pattern.

Type of employment, Chronic illness and drug/alcohol use they ought to be included in regression since they disturb sleep patterns.

As a result, option (a) Type of employment. (b) Indicator for chronic illness. (c) Drug or alcohol use is correct.

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