© 2001 by the American Diabetes Association, Inc.
The Marital Relationship and Psychosocial Adaptation and Glycemic Control of Individuals With Diabetes
1 State University of New York (SUNY) Upstate Medical University
OBJECTIVETo explore the relationship between marital relationship domains (i.e., intimacy and adjustment) and glycemic control and psychosocial adaptation to diabetes. RESEARCH DESIGN AND METHODSA total of 78 insulin-treated adults with both type 1 and type 2 diabetes were assessed on a single occasion. They completed two marital quality measures (Spanier Dyadic Adjustment Scale and Personal Assessment of Intimacy in Relationships Scale) and four quality-of-life measures (Diabetes Quality of Life Scale, Medical Outcomes Study Health Survey, Problem Areas in Diabetes Scale, and Positive and Negative Affect Scale). Glycemic control was assessed by HbA1c. Demographic data (age, sex, type and duration of diabetes, years married, other medical conditions, family history, disability, and years of education) were gathered from the chart and questionnaires. RESULTSConcerning psychosocial adaptation, both of the marital quality measures were predictors of aspects of adaptation. Better marital satisfaction was related to higher levels of diabetes-related satisfaction and less impact, as well as less diabetes-related distress and better general quality of life. Higher levels of marital intimacy were related to better diabetes-specific and general quality of life. Concerning glycemic control, there was a nonsignificant trend for marital adjustment scores to relate to HbA1c (P = 0.0568). CONCLUSIONSFor insulin-treated adults with diabetes, quality of marriage is associated with adaptation to diabetes and other aspects of health-related quality of life. The suggestive finding that marital adjustment may relate to glycemic control warrants further study. Future work should also explore the impact of couples-focused interventions on adaptation, adherence, and glycemic control.
Abbreviations: BG, blood glucose DAS, Spanier Dyadic Adjustment Scale DCCT, Diabetes Control and Complications Trial DQOL, Diabetes Quality of Life Scale MCS, Mental Composite Scores PAID, Problem Areas in Diabetes Scale PAIR, Personal Assessment of Intimacy in Relationships PANAS, Positive and Negative Affect Schedule PCS, Physical Composite Scores SF-36, Medical Outcomes Study Health Survey
A large body of research suggests that support from others can facilitate recovery from a physical illness and enhance the ability to cope with and adapt to the consequences of chronic illness (1). A subset of social support studies has focused on the family as a major source of support, finding that stronger family support relates to such varied outcomes as better psychological adjustment (2) and enhanced compliance with medical regimens (3). Studies of families of individuals with diabetes have confirmed the importance of family support. Studies of children and adolescents with type 1 diabetes (4,5), as well as studies of adults with type 2 diabetes (6,7), have found that better illness adaptation and treatment adherence relate to high family cohesion and low family conflict. Addressing physical outcomes, cross-sectional studies have shown a relationship between social support and glycemic control both with samples of adolescents (8) and adults (9). Schwartz et al. (10), in a prospective study of type 2 diabetic adults, found that a decrease in social support predicted a worsening of blood glucose (BG) control over time. Support from ones spouse has been found to be the most important source of support during illness episodes (11), although disruptions in the marital relationship often occur when one partner has a chronic illness. The importance of marital support, and conversely the harmful effects of marital conflict, has been demonstrated for patients with chronic diseases, but scant attention has been paid to the marital relationship for individuals with diabetes. Katz (12) found that the self-management behavior of husbands with diabetes often deteriorates when conflict exists with their wives. Others have shown that the spouses belief in the importance of BG control predicts such control better than the patients beliefs (13). Evidence cited in a recent review (14) of the diabetes literature argues for the importance of considering the family as the setting of disease management, but it is clear that more work needs to be done to understand the role that the marital relationship may play both in physical (BG control) and psychological (illness adaptation) outcomes. The purpose of the present study was to explore the relationship between several domains of the marital relationship and the physical and psychosocial outcomes achieved by individuals with diabetes. The specific marital areas we examined included overall marital adjustment and intimacy. Our main hypotheses were 1) better marital adjustment will be associated with better patient adaptation to diabetes and 2) better marital adjustment will be associated with better BG control.
A total of 78 subjects were recruited at the Joslin Diabetes Center at SUNY Upstate Medical University in Syracuse, New York. Potential participants were identified from chart review to determine if they met the following inclusion criteria: between 18 and 55 years of age, diagnosed with diabetes for 1 year, use insulin daily (only insulin-requiring patients were included in order to minimize the potential effect of type of treatment), have been married for 1 year, and are able to provide written informed consent. Patients were approached by a research assistant at their regularly scheduled health care visit and if enrolled they completed questionnaires and returned them by mail. Demographic and medical data were gathered from the chart. This study was approved by the institutional review board of the SUNY Upstate Medical University. Metabolic control was determined by measuring HbA1c using the DCA 2000+ Analyzer (Bayer, Elkhart, IN). HbA1c values reflect the average BG over the preceding 3 months and is widely accepted as a reliable and valid index of metabolic control. This test was completed as a routine part of their clinic visit. Staff collecting the data were blind to other research data.
Marital quality measures
Personal Assessment of Intimacy in Relationships Scale.
Psychosocial adaptation measures
Medical Outcomes Study Health Survey.
Problem Areas in Diabetes Scale.
Positive and Negative Affect Schedule.
Demographic data
Statistical analysis
The demographic characteristics of the sample population are presented in Table 1. The mean age of the group was 45.8 years; 58% of the sample was female, the average level of education was 14 years, and the mean length of marriage was >19 years. Over half (57%) of the sample had type 1 diabetes, and the respondents were distributed across levels of glycemic control as measured by HbA1c levels. Of the sample population, 13% reported a disability that limited their ability to work, and the respondents had an average of 2.9 other health problems.
Psychosocial adaptation Table 2 summarizes the results of stepwise regression analyses of the effect of marital adjustment on psychosocial adaptation. The first analyses examined the power of relevant variables to predict psychosocial adaptation to diabetes (DQOL, PAID, PANAS, and SF-36). Models containing only the demographic control variables were estimated for each of the dependent variables. The demographic variables were significant predictors of both DQOL Satisfaction (F = 8.32, P 0.0001) and Impact (F = 5.41, P 0.0021). The control models also were significant for the PAID (F = 5.47, P 0.0020) and the PCS (F = 10.52, P 0.0001).
Examination of the DQOL found that fewer health problems (F = 9.09, P 0.0036) and a greater number of years married (F = 13.99, P 0.0004) predicted increased diabetes satisfaction and less diabetes impact (F = 11.74, P 0.0010, and F = 3.53, P 0.0644, respectively). There were trends for female sex to predict lower satisfaction (F = 3.21, P 0.0777) and greater impact (F = 3.97, P 0.0502). Therefore, these variables were included in subsequent analyses. When these variables were controlled, the DAS was a predictor of both increased diabetes satisfaction (F = 9.42, P 0.0032) and less impact (F = 6.34, P 0.0143), whereas an increased PAIR related to less impact (F = 6.68, P 0.0120).
Examination of the PANAS found that an increased number of health problems (F = 8.18, P
Examination of the PAID found that a greater number of years married (F = 5.73, P
Examination of the SF-36 found that a decreased number of health problems (F = 41.29, P
Glycemic control
The data indicate that marital quality does relate to an individuals adaptation to diabetes. Individuals who described a better overall marital adjustment and higher levels of perceived marital intimacy also reported that they were more satisfied with varied aspects of their own adaptation to the illness (e.g., treatment, appearance, and activities), felt diabetes has less of a negative impact, and experienced less diabetes-specific emotional distress. These individuals also reported better mental healthrelated quality of life, including better social and emotional functioning, mental health, and overall well-being. Although no relationship was found between glycemic control and intimacy, a strong trend relating good glycemic control to good marriages was found. Given the numerous factors that affect glycemic control (e.g., degree of insulin deficiency, insulin resistance, and diet), it has been difficult to demonstrate an effect for any specific psychosocial variable. Our previous work found that family support related to adaptation, but not to glycemic control (6). The current findings suggest that the marital relationship may be more powerful than general family support in terms of its impact on glycemic control. The study design was cross-sectional; therefore causality could not be determined. Thus, the data could not distinguish between the interpretation that a poor marital relationship leads to poor illness adaptation and/or glycemic control and the hypothesis that poor control and/or adaptation leads to a more problematic marital relationship It is likely that both effects occur. Marital role theory (28) emphasizes adequate role performance mastery and the individuals and couples capacity to adapt as being critical to marital adjustment. When we marry, we develop specific role expectations for our spouses. Marital role strain is likely when expectations are not met, when mastery is not demonstrated, and when the couple does not adapt to new situations. When one partner develops a chronic illness such as diabetes, the need for adaptation is significant and strains are inevitable. Such strains might be minimal, allowing for intimacy and positive marital adjustment, if the partner with diabetes demonstrates mastery over the illness and the care regimen and has achieved good glycemic control. However, if the partner with diabetes is struggling or opting out, both partners may feel inadequate, and marital distance may follow. Similarly, when the strains of a chronic illness are experienced within an intimate and accepting marriage, the couple should be able to realign their expectations of each other, master the areas they still can control, and support each others efforts to successfully adapt. However, if the marriage was distant before the demands of the illness, the adjustment may not go smoothly. In both cases, a negative marital relationship might affect the individuals adjustment and his/her ability to maintain the diabetes care regimen and good glycemic control. A third possibility is that the marital-illness correlations reflect a relationship between these variables and another unmeasured variable. For example, it may be that individuals who take poor care of their diabetes also take poor care of their marriages, so that the observed relations stem from a third factor, such as degree of denial or use of passive coping styles. We chose to study both type 1 and type 2 diabetic subjects who were being treated with insulin. This approach, which has been adopted by others (29,30), reasons that regular insulin administration produces unique challenges, the impact of which are lost when studies group by type only and thus group together subjects who are merely watching their diets with those who must regularly measure BG and inject insulin, as well as deal with the potential effects of too much or too little insulin. Although diabetes type is a major dichotomy from a medical perspective (and is included in our data analysis), we believe that insulin treatment is a major dichotomy from a psychological and behavioral perspective that has ramifications for adaptation, quality of life, and, perhaps, the marital relationship. The fact that diabetes type was found only once as a significant predictor of our dependent variables (having type 2 diabetes related to poorer physical function) appears to support this approach. However, by studying this group we also limited the generalizability of our findings to the group of insulin-treated individuals. The demographic data point to interesting areas that deserve further study. Not surprisingly, individuals who have a greater number of health problems were more likely to report difficulty adapting. Women were also more likely to be struggling, whereas individuals who had been married for a longer time were doing better. These findings may relate to different gender roles, levels of social support, or other factors. For example, women who are ill may respond differently than men, as they are often seen as the nurturers and may be less comfortable in a role in which they are the one being helped. Patients in long-term stable marriages may reap the benefits of the stress-buffering effect of social support. Seeing patients as whole human beings who are not only dealing with their diabetes but also possibly dealing with other health problems, role conflicts, and varying levels of support should result in greater attention being paid to more emotionally vulnerable groups. There are methodologic limitations to the study. The fact that the strongest relationships were found among self-report paper-pencil measures rather than between these measures and HbA1c, a physiological index, may mean that response style inflated these correlations. Also, we note that the average number of years married of our sample was 19.2 years, that the mean duration since diabetes was diagnosed was 16.9 years, and that our results may have been different if our subjects had been married and/or diagnosed for a shorter period of time. We cannot generalize to all married individuals with diabetes. Finally, we note that our subjects had an average of 2.9 other health problems. We do not have data comparing Joslin Center patients to those treated at other sites; our patients may be more ill or in other ways not representative of diabetes patients as a large group. Therefore, efforts to replicate these findings at other sites are warranted. The interaction between marital- and diabetes-related variables points to the importance of understanding the context that the marital relationship provides for our patients efforts to manage their diabetes. In addition, the development of couples-focused intervention is warranted, and future studies should be designed to determine whether helping the partner to be more supportive or the couple to be more intimate has an impact on adaptation to diabetes and adherence to the medical regimen and/or glycemic control.
Address correspondence and reprint requests to Paula M. Trief, PhD, Department of Psychiatry, SUNY Upstate Medical University, 750 E. Adams St., Syracuse, NY 13210. E-mail: triefp{at}upstate.edu. Received for publication 9 January 2001 and accepted in revised form 3 May 2001. A table elsewhere in this issue shows conventional and Système International (SI) units and conversion factors for many substances.
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