26. Observational data were collected by researchers on 189 consecutive births at Baystate Medical Center in Springfield

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26 Observational Data Were Collected By Researchers On 189 Consecutive Births At Baystate Medical Center In Springfield 1 (57.57 KiB) Viewed 137 times

26. Observational data were collected by researchers on 189 consecutive births at Baystate Medical Center in Springfield, Massachusetts (USA). The researchers were interested in us logistic regression to identify maternal and other factors associated with the low birth weight births (as per the World Health Organization's definition of low birth weight as < 2500 grams). The average birth weight for the 189 infants in the sample was 2,945 grams (s= 729, range -709-4,990 grams) 59 infants (30%) meeting the low birth weight criteria. COCOLOD 30oC The first regression relates the log (In) odds of low birth weig (LBW) to mother's smoking status during pregnancy, and is a follows: In(oddsof LBW) = -1.09 + 0.70x, where x = 1 if the mothe smoked during pregnancy (and O if not). The estimated stand error of the slope of x, (SECB) is 0.32. - Compute and report a 95% CI for the quantity ffrom que 25. (the estimated odds ratio for being low birth weight for children of mothers who smoked during pregnancy, compa to mother's who did not smoke during pregnancy?) a. (0.06, 1.34) b. (-1.34,-0.06) C. (1.06, 3.82) d. (0.26, 0.94) 27. Observational data were collected by researchers on 189 conocutun hirt tor in Springfield