TAILIEUCHUNG - A Methodology for the Health Sciences - part 5

Mặt khác, có thể là một hiệp hội trong mỗi tầng sẽ biến mất trong tập dữ liệu chung. Những con số sau đây minh họa điều này: tầng 1: Tiếp xúc với bệnh | PROBLEMS 349 Table Blood Pressure Data for Problem Maximal SBP Y Y - Y Normal Deviate Pre Post X Y 163 186 216 245 200 210 128 130 161 161 205 198 306 349 291 250 233 194 288 345 254 357 116 155 236 211 241 292 176 252 204 258 312 259 251 276 256 340 The maximum oxygen consumption VO2 MAX is measured before X and after Y. Here X Y x2 y2 xy 54465 and paired t . Do tasks c k-ii m n at x 30 35 and 40 p q-ii and t . The ejection fractions at rest X and at maximum exercise Y before training is used in this problem. X Y x2 y2 xy and paired t . Analyze these data including a scatter diagram and write a short paragraph describing the change and or association seen. The ejection fractions at rest X and after exercises Y for the subjects after training 1 are associated 2 do not change on the average 3 explain about 52 of the variability in each other. Justify statements 1 3 . X Y x2 y2 xy and paired t . Problems to refer to the following study. Boucher et al. 1981 studied patients before and after surgery for isolated aortic regurgitation and isolated mitral regurgitation. The aortic valve is in the heart valve between the left ventricle where blood is pumped from the heart and the aorta the large artery beginning the arterial system. When the valve is not functioning and closing properly some of the blood pumped from the heart returns or regurgitates as the heart relaxes before its next pumping action. To compensate for this the heart volume increases to pump more blood out since some of it returns . To correct for this open

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