Kyphosis refers to severe forward flexion of the
Chapter 13, Problem 24(choose chapter or problem)
Kyphosis refers to severe forward flexion of the spinefollowing corrective spinal surgery. A study carried outto determine risk factors for kyphosis reported theaccompanying ages (months) for 40 subjects at the timeof the operation; the first 18 subjects did have kyphosisand the remaining 22 did not.Kyphosis 12 15 42 52 59 7382 91 96 105 114 120121 128 130 139 139 157No kyphosis 1 1 2 8 11 1822 31 37 61 72 8197 112 118 127 131 140151 159 177 206Use the Minitab logistic regression output on the nextpage to decide whether age appears to have a significantimpact on the presence of kyphosis.Logistic regression table for Exercise 2495% CIPredictor Coef StDev Z P Odds Ratio Lower UpperConstant 20.5727 0.6024 20.95 0.342age 0.004296 0.005849 0.73 0.463 1.00 0.99 1.02
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