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Given the description of the variables in the data set, despite one way you could check the data for accuracy or consistency.

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Background

Melatonin is a orcadian hormone transmitted via the suprachiasmatic nucleus in the hypthalairnus. Melatonin secretion indoces sleep and melatonin lnhtbon prevents the onset of sleep WhIe studies have shown that Light-Eratting Diode (LED) lit computer and tablet screens suppress metatonin production, patients wtio read books and newspapers prior to sleep from LEDM computers, tablets, and oral phones often claim that the reading induces sleep and overcomes any melatonin inhibtion caused by the LED screens. A case-control shaty was done to determine if there Is an association between reading books « newspapers from a LED-lit tablet or call phone and falling asleep.

Methods

Women were recruited from primary care practices in East Virginia. Cases reported falling asleep more than 1 hour after getting lito bed and controls reported faling asleep wêthl’i I hour after getting into bed. Ml participants completed interviewer-administered questionnaireson demographic characteristics (age, level o( education) and other sleep-related measures

Data dictionary

age — continuous variable

watch_tv- Oforno,lforyes

E_readlng— Oforno,Iforyes

caffeine— Oforno,lforyes

aloohol_use — Olor no, I for yes

SMI— continuous variable

O for SMI < 25,1 for SMI e 25

high_school_graduate— O for no. 1 for yes

sleep_delay— O no, 1 for yes

Question 1: Given the description of the variables in the data set, despite one way you could check the data for accuracy or consistency.

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