INDIVIDUAL
ASSIGNMENT 4.
Download the SPSS data file assign4data.sav. Open this file within SPSS. You will notice that the file contains eight variables: MAST, GCS, RTSscene, RTSed, BP, Pressure, Age, IVFluid These variables were collected in a study designed to investigate the effectiveness of the MAST garment. MAST is a binary variable coded 0 if the patient did not receive the MAST (control group) and 1 if the MAST were applied (experimental group). GCS is the variable used for the Glasgow Coma Scale. This is an ordinal variable to denote the GCS score of the patient upon arrival at the scene. The RTSscene is the Revised Trauma Score recorded at the scene. RTSed is the Revised Trauma Score recorded upon arrival at the emergency department. BP is the systolic blood pressure of the patient recorded upon arrival at the emergency department. Pressure is the inflation pressure of the MAST if they were applied. Age is the actual age of the patient measured in years. IVFluid is the total volume of IV fluid administered in the field, measured in milliliters. Using these data, complete the assignments below.
A. Using the Mann-Whitney test, determine if there was any difference in the Glasgow Coma Scores (GCS) between those patients who received the MAST pants and those who did not. You will notice that this test is used to determine if the groups were identical in GCS, which in this case is serving as a control variable. This is an ordinal variable that we are testing between different individuals. Therefore, the Mann-Whitney test is appropriate. Copy and paste your output into an e-mail and send to me by the due date. IMPORTANT: To receive full credit, you must include your interpretation of the output in your e-mail. Undigested computer output will NOT be accepted.
B. Using the Wilcoxon test, determine if there was any change in the RTS score between the scene and arrival at the hospital. This variable is an ordinal variable and we are testing it at two different points in time. Therefore, it is a dependent test of an ordinal variable and the Wilcoxon test is appropriate. Copy and paste your output into an e-mail and send to me by the due date. IMPORTANT: To receive full credit, you must include your interpretation of the output in your e-mail. Undigested computer output will NOT be accepted.
C. Using the Pearson correlation procedure, determine if the systolic blood pressure (BP) is correlated with the inflation pressure of the MAST (pressure), the total volume of IV fluids administered (IVFluid), or age of the patient (age). You will notice that these are all interval level data, and we will assume that they are all normally distributed. Therefore, the Pearson correlation procedure is appropriate to measure the associations between these variables. IMPORTANT: To receive full credit, you must include your interpretation of the output in your e-mail. Undigested computer output will NOT be accepted.