Exam 12: Regression Analysis

A researcher wishes to determine if there is an association between taking frequent breaks (minutes away from desk), certification status (yes/no), age (number of years) and reaching monthly productivity goals in the clinical documentation department (yes/no). What would be the appropriate test to use?

A nursing professor wishes to determine if there is an association between her students grades and three independent variables (use of online tutorials, the use of quiz review sessions and participation in study sessions). When she adds the third variable the standard error of the estimate changes from 8.2 to 9.4. She knows this means:

A researcher is studying 378 nurses enrolled in an online RN to BSN completion program and analyzing how age, level of engagement, motivation and time spent studying impact the final test score. When she enters level of engagement, motivation and time spent studying into the regression model the R square change associated with each is significant but when she enters age into the model the R square change is not significant. You would recommend the final regression model include what variables?

A study examining the relationship between multiple independent variables (age, compliance with colorectal health screening guidelines and genetics) and colorectal cancer in men over age 65. They include a dependent variable of colorectal cancer (yes/no). What type of regression would be appropriate to apply in this situation?

A nurse researcher studies the impact of medication and exercise on HgA1C levels and reports that medication and exercise significantly decreases HgA1C levels. The R square associated with the model is 0.83. You know this means:

A study examines the relationship between years of educational preparation, language spoken, age, primary nursing role, race and ethnicity and total score on a cultural competency exam among a group of 987 randomly selected nurses at your hospital. What test would be appropriate to determine if there is an association?

A psychiatric nurse practitioner completes a study examining psychological distress scores (DS), hours spent exercising (X), and number of counseling sessions (C) to see if these variables impact minutes spent in ritualistic behavior among patients diagnosed with obsessive compulsive disorder. She reports the following regression equation. Y= 59+ 3.98(DS)-2.89(X)-4.5(C) If a patient has a distress score of 5, spends 2 hours exercising and attends a counseling session you would expect to see about how many minutes of ritualistic behavior?

A psychiatric nurse practitioner completes a study examining psychological distress scores, hours spent sleeping, and number of visitors to see if these variables impact minutes spent in ritualistic behavior among patients diagnosed with obsessive compulsive disorder. She reports the following information. What statement is true? B Sig Psychological distress 11.511 .000 Sleeping -4.735 .020 Visitors 3.22 .41

A researcher wants to determine how an effort score (0-10) and an engagement score (0-100) impact performance (high/low) for nurses enrolled in an online graduate programs. What test would you recommend she utilize?

A nursing professor wishes to determine if there is an association between her students grades and three independent variables (use of online tutorials, the use of quiz review sessions and participation in study sessions). Her regression model has a significant R square (0.83). She knows this means:

A psychiatric nurse practitioner completes a study examining psychological distress scores, hours spent sleeping, and number of visitors to see if these variables impact minutes spent in ritualistic behavior among patients diagnosed with obsessive compulsive disorder. She reports the following information. What statement is true? B Sig Psychological distress 11.511 .040 Sleeping -4.735 .020 Visitors 3.22 .61

A researcher is studying 378 nurses enrolled in an online RN to BSN completion program and analyzing how age, level of engagement, motivation and time spent studying impact the final test score. When she enters age and motivation into the regression model the R square change associated with each is NOT significant. You would recommend:

The standard error of the estimate tells you:

Your regression analysis only included a sample of 23. You should report the:

A psychiatric nurse practitioner completes a study examining psychological distress scores, hours spent exercising, and number of counseling sessions to see if these variables impact minutes spent in ritualistic behavior among patients diagnosed with obsessive compulsive disorder. She reports the following information. B Sig Psychological distress 3.98 .040 Exercise -14.29 .020 Counseling sessions -1.45 .031 If a patient engages in two hours of exercise what would you predict would happen to the number of minutes he/she spends in ritualistic behaviors?

A nurse researcher studies the impact of medication and exercise on HgA1C levels and reports that exercise significantly decreases HgA1C levels. You know this means: