THE RELATIONSHIPS AMONG BODY AWARENESS, SELF-REGULATION, SELF-MANAGEMENT, AND BLOOD PRESSURE IN ADULTS WITH HYPERTENSION by ANA LAURA SOLANO LÓPEZ Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy Frances Payne Bolton School of Nursing CASE WESTERN RESERVE UNIVERSITY May, 2016 2 CASE WESTERN RESERVE UNIVERSITY SCHOOL OF GRADUATE STUDIES We hereby approve the thesis/dissertation of Ana Laura Solano López candidate for the degree of Doctor in Philosophy*. Committee Chair Dr. Shirley Moore Committee Members Dr. Mary Dolansky Dr. Ronald Hickman Dr. Richard Josephson Dr. David Fresco Date of Defense November 30th 2015 *We also certify that written approval has been obtained for any proprietary material contained therein. 3 Table of Contents Table of Contents ................................................................................................................ 3 List of Tables ...................................................................................................................... 6 List of Figures ................................................................................................................... 11 Acknowledgements ........................................................................................................... 12 Abstract ............................................................................................................................. 13 CHAPTER I: Introduction ............................................................................................ 15 Research Questions ....................................................................................................... 23 Theoretical Framework ................................................................................................. 24 Definition of Terms....................................................................................................... 28 Study Assumptions ....................................................................................................... 32 Significance of the Study .............................................................................................. 32 CHAPTER II: Literature Review ................................................................................. 34 Uncontrolled Hypertension ........................................................................................... 34 Hypertension Self-Management ................................................................................... 37 Self-Regulation ............................................................................................................. 45 Interoceptive Awareness ............................................................................................... 53 Summary ....................................................................................................................... 68 CHAPTER III: Methods ................................................................................................ 70 Design ........................................................................................................................... 70 Sample........................................................................................................................... 70 Setting ........................................................................................................................... 74 Procedures ..................................................................................................................... 74 4 Description of the Sample ............................................................................................. 75 Data Collection ............................................................................................................. 78 Measures ....................................................................................................................... 80 Data Management ......................................................................................................... 98 Preliminary Data Analysis ............................................................................................ 98 Data Analysis .............................................................................................................. 102 Human Subjects’ Protection ....................................................................................... 104 Chapter IV: Results ...................................................................................................... 107 Description of Main Variables .................................................................................... 107 Description of Covariates ........................................................................................... 110 Research Question 1 ................................................................................................... 112 Exploratory Analysis .................................................................................................. 128 Research Question 2 ................................................................................................... 134 Summary of Results .................................................................................................... 148 Chapter V: Discussion .................................................................................................. 149 Associations among Independent Variables ............................................................... 149 Independent Variables as Predictors of Blood Pressure ............................................. 158 Moderating Effects of Covariates ............................................................................... 162 Other Findings ............................................................................................................ 162 Significance of the Findings ....................................................................................... 164 Limitations .................................................................................................................. 166 Recommendations for Further Research ..................................................................... 169 Conclusion .................................................................................................................. 170 5 Appendix A: Instructions for the Heartbeat Perception Task ......................................... 171 Appendix B: Multidimensional Assessment of Interoceptive Awareness ...................... 173 Appendix C: Iowa Gambling Task App ......................................................................... 178 Appendix D: Index of Self-Regulation ........................................................................... 182 Appendix E: Morisky’s Medication Adherence Scale .................................................... 184 Appendix F: DASH Diet Index....................................................................................... 186 Appendix G: Wrist Heart Rate Monitor Instructions ...................................................... 190 Appendix H: Exercise Diary ........................................................................................... 193 Appendix I: International Physical Activity Questionnaire ............................................ 195 Appendix J: Blood Pressure Protocol ............................................................................. 198 Appendix K: Demographics ........................................................................................... 200 Appendix L: Montreal Cognitive Assessment ................................................................ 203 Appendix M: Charlson Comorbidity Index .................................................................... 205 Appendix N: PROMIS Depression and Anxiety ............................................................ 207 Appendix O: Medication Regimen Complexity Index ................................................... 209 Appendix P: Blood Pressure Knowledge Scale .............................................................. 212 Appendix Q: Description of Missing Data ..................................................................... 214 Appendix R: Hierarchical Regressions for each Self-Management Behavior ................ 217 Bibliography ................................................................................................................... 228 6 List of Tables Table 1: Comparison of Effect Sizes from other Studies.………………………………73 Table 2: Characteristics of the Sample……………………………………………….…78 Table 3: Descriptive Statistics of Main Variables………………………..…………….109 Table 4: Descriptive Statistics of Covariates…….…………………………….…….…111 Table 5: Correlations among Main Variables………………………...……………...…114 Table 6: Correlations between Main Variables and Covariates……..………………….116 Table 7: Correlations among Covariates………………………………………….…….118 Table 8: Hierarchical regression for self-management behaviors, self-regulation skills, decision-making ability, and interoceptive awareness measured by MAIA on systolic blood pressure.……………………121 Table 9: Hierarchical regression for self-management behaviors, self-regulation skills, decision-making ability, and interoceptive awareness measured by the heartbeat perception task on systolic blood pressure…………………... 123 Table 10: Hierarchical regression for self-management behaviors, self-regulation skills, decision-making ability, and interoceptive awareness measured by MAIA on diastolic blood pressure ………..………………………………..125 Table 11: Hierarchical regression for self-management behaviors, self-regulation skills, decision-making ability, and interoceptive awareness measured by the heartbeat perception task on diastolic blood pressure…………………...127 Table 12: Hierarchical regression for medication adherence, self-regulation skills, decision-making ability, and interoceptive awareness measured by MAIA on systolic blood pressure………………………………………………………130 7 Table 13: Hierarchical regression for medication adherence, self-regulation skills, decision-making ability, and interoceptive awareness measured by heartbeat perception task on systolic blood pressure…………………………...133 Table 14: Hierarchical regression for self-management behaviors, self-regulation skills, decision-making ability, and interoceptive awareness measured by MAIA, age, and age*medication adherence on diastolic blood pressure…...136 Table 15: Hierarchical regression for self-management behaviors, self-regulation skills, decision-making ability, and interoceptive awareness measured by the heartbeat perception task, age and age*medication adherence on diastolic blood pressure…………………………………………………..… 137 Table 16: Hierarchical regression for self-management behaviors, self-regulation skills, decision-making ability, and interoceptive awareness measured by MAIA, age, and age*diet adherence on diastolic blood pressure……………………………………………………. 138 Table 17: Hierarchical regression for self-management behaviors, self-regulation skills, decision-making ability, and interoceptive awareness measured by the heartbeat perception task, age and age*diet adherence on diastolic blood pressure…………………………..…… 139 Table 18: Hierarchical regression for self-management behaviors, self-regulation skills, decision-making ability, and interoceptive awareness measured by MAIA, age and age*physical activity on diastolic blood pressure……………………………………...…………..…..140 Table 19: Hierarchical regression for self-management behaviors, 8 self-regulation skills, decision-making ability, and interoceptive awareness measured by the heartbeat perception task, age and age*physical activity on diastolic blood pressure………………...…………….141 Table 20: Hierarchical regression for self-management behaviors, self-regulation skills, decision-making ability, and interoceptive awareness measured by MAIA, age, and age*self-regulation on diastolic blood pressure……………………………………………….....…..142 Table 21: Hierarchical regression for self-management behaviors, self-regulation skills, decision-making ability, and interoceptive awareness measured by the heartbeat perception task, age and age*self-regulation on diastolic blood pressure………………….……………..143 Table 22: Hierarchical regression for self-management behaviors, self-regulation skills, decision-making ability, and interoceptive awareness measured by the MAIA, age and age*decision-making on diastolic blood pressure…………………………………………………..….144 Table 23: Hierarchical regression for self-management behaviors, self-regulation skills, decision-making ability, and interoceptive awareness measured by the heartbeat perception task, age and age*decision-making on diastolic blood pressure………………………….145 Table 24: Hierarchical regression for self-management behaviors, self-regulation skills, decision-making ability, and interoceptive awareness measured by the MAIA, age and age*MAIA on diastolic blood pressure……………………………………..….146 9 Table 25: Hierarchical regression for self-management behaviors, self-self-regulation skills, decision-making ability, and interoceptive awareness measured by the heartbeat perception task, age and age*heartbeat perception task on diastolic blood pressure………….…147 Table 26: Description of missing data …………………..……………………………..215 Table 27: Hierarchical regression for diet adherence, self-regulation skills, decision-making ability, and interoceptive awareness measured by MAIA on systolic blood pressure…………………………………….……. 218 Table 28: Hierarchical regression for diet adherence, self-regulation skills, decision-making ability, and interoceptive awareness measured by heartbeat perception task on systolic blood pressure………………..……....219 Table 29: Hierarchical regression for physical activity, self-regulation skills, decision-making ability, and interoceptive awareness measured by MAIA on systolic blood pressure……………………………………………. 220 Table 30: Hierarchical regression for physical activity, self-regulation skills, decision-making ability, and interoceptive awareness measured by heartbeat perception task on systolic blood pressure……………………….221 Table 31: Hierarchical regression for medication adherence, self-regulation skills, decision-making ability, and interoceptive awareness measured by MAIA on diastolic blood pressure………………… 222 Table 32: Hierarchical regression for medication adherence, self-regulation skills, decision-making ability, and interoceptive awareness measured by the heartbeat perception task 10 on diastolic blood pressure………………………………………………...……223 Table 33: Hierarchical regression for diet adherence, self-regulation skills, decision-making ability, and interoceptive awareness measured by MAIA on diastolic blood pressure…………………………………………...…224 Table 34: Hierarchical regression for diet adherence, self-regulation skills, decision-making ability, and interoceptive awareness measured by the heartbeat perception task on diastolic blood pressure……………………….….225 Table 35: Hierarchical regression for physical activity, self-regulation skills, decision-making ability, and interoceptive awareness measured by MAIA on diastolic blood pressure………………………………….…………..226 Table 36: Hierarchical regression for physical activity, self-regulation skills, decision-making ability, and interoceptive awareness measured by the heartbeat perception task on diastolic blood pressure………………………227
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