Baseline levels of psychological distress as predictors of improvements (Hypothesis ii)
Women with higher psychological distress at baseline showed greater decreases in psychological distress at the post-group assessment compared to women with lower psychological distress (b = 0.312; 95 per cent CI 0.003-0.487). Women with lower social support at baseline showed significantly greater increases in social support at post-group assessment compared to women with higher social support (b = 0.505; 95 per cent CI 0.222- 0.740). Women with lower self-esteem at baseline were more likely to increase their self-esteem at the post-group assessment compared to women with higher self esteem (b = 0.657; 95 per cent CI 0.413-0.900).
Association with age, and having a partner and children (Hypothesis iii)
No significant associations were observed for changes in psychological distress depending on women’s age (r = 0.017, p = 0.91), and whether or not they had children (t = 0.42, p = 0.68) or a partner (t = 0.13, p = 0.90). Likewise, a test for an association between changes in social support and age showed a trend for significance (r = -0.30, p = 0.052), and having children (t = -2.01, p = 0.84) or a partner (t = -0.71, p = 0.48) were not significantly associated with changes in social support. No significant correlations were observed for changes in self-esteem depending on age (r = 0.015, p = 0.93), having children (t = -0.26, p = 0.80) or being partnered (t = -1.55, p = 0.88). None of the significance tests for associations between satisfaction with the group depending on age (r = 0.18, p = 0.28), having children (t = -0.91, p = 0.37) or a partner (t = 0.17, p = 0.87) were significant.
Discussion
This study evaluated the efficacy of a support group for young women with a diagnosis of early breast cancer. Psychological outcomes assessed were psychological distress, self-esteem and perceived social support. Consistent with our hypothesis (i) that there would be significant improvements in psychological outcomes relative to baseline, we found that participation in a group program evaluated by this study for young women with early stage breast cancer resulted in a significant decrease in psychological distress.
Although the authors know of no other group intervention evaluation conducted exclusively with young women with breast cancer to date, the finding of reduced psychological distress in women with early stage breast cancer following participation in a short-term support group is consistent with a growing number of previous studies of women of mixed ages.17,33,35 Previous randomised controlled trials with women with mixed or unspecified stages of breast cancer21,22,28-30,39 have also showed reductions in psychological distress following participation in support groups, as have studies with women with more advanced cancer.18,24,59 However, not all group intervention studies have shown reductions in psychological distress in women with early stage breast cancer.12,15 Interestingly, a study conducted by Spiegel and colleagues failed to find improvements on a number of psychometric measures of emotional well-being at the end of a 12 week supportive-expressive group therapy program for women with early breast cancer, but significant improvements were evident at six and 12 months relative to baseline assessments.38 Inconsistent findings across studies could be the result of variations in the length of group programs and differences in when women join the group (ie. shortly after diagnosis or towards the end of treatment).
Women with higher psychological distress at baseline showed greater decreases in psychological distress at the post-group assessment compared to women with lower psychological distress. The increased reductions in psychological distress found for those women who were most distressed at pre-group assessment indicates that those women who were most in need of psychological intervention made greater gains than those who were less distressed. These findings are similar to findings in a study of women with metastatic breast cancer, which found that women who were more distressed benefited from a group intervention, compared to those who were less distressed, who, in that study, did not benefit from participation.24
On average, social support was not significantly improved by participation in the group. Although the potential for oncology support programs to assist women to increase their social support networks, to use their support network more effectively and to maintain quality in their interpersonal relationships, has been clearly documented,60 the effect of group interventions on perceived social support is far from clear. Some studies have found no improvement in perceived social support from group support programs,17,20 while others have found the effects to be dependent on pre-group social support levels.26 Fobair and colleagues found, in a study of a supportive group for lesbians with primary breast cancer, that perceived social support declined following group participation.21 The authors suggested that the participants may have become more critical of the levels of support provided to them by their social networks as contact with other women in similar situations led them to raise their expectations regarding social support.21 Factors such as these may account for our finding that perceived social support was not significantly improved overall by participation in the support group.
Our finding that women with lower social support at the commencement of the group program showed significantly greater increases in social support following the support group, compared to women with higher social support at baseline is consistent with other group intervention studies. Fobair and colleagues found that people who experience problems with stress or social isolation or are in need of social support are those most likely to benefit from participation in groups.21 Hegelson and colleagues in a comparison of educational and peer support group interventions, found that women who lacked emotional support from their partners, or who reported more negative interactions with their partners, benefited from peer support groups.26
On average we found no changes in self-esteem resulting from the support groups; however, we did find significantly greater increases in self-esteem for women with lower self-esteem before the group commenced compared to women with higher self-esteem. The previous literature on the efficacy of support groups on self-esteem is inconsistent. Edelman and colleagues found improvements in self-esteem in women with early stage breast cancer following group therapy,17 as did Hegelson and colleagues in women with mixed stages of breast cancer. However, studies conducted with women with more advanced breast cancers have shown mixed results with regard to self-esteem.18,25,31,36 These inconsistent results suggest that the impact of support groups on self-esteem may be more complex than has previously been anticipated. Future research should seek to clarify the patient characteristics and types and duration of group therapy most likely to lead to increases in self-esteem.
Hypothesis (iii) that women would experience greater improvements in psychological outcomes depending on their age and whether or not they have a partner, or children, was not supported. The lack of significant associations between these sociodemographic variables and the benefits obtained from the support group may reflect the different, but not lesser, concerns of women in different life circumstances. While we found no association between these life variables, pre-group psychological distress and perceived social support predicted psychological outcomes, suggesting that psychological characteristics are more powerful predictors of benefit from support groups than sociodemographic variables. The authors are not aware of previous studies that have examined the associations between these sociodemographic variables and improvement from support groups and future studies should seek to replicate our findings.
In interpreting the findings of our study the strengths and limitations of this study should be noted. Although to our knowledge this is the first study to provide empirical data on the effect of a support group conducted specifically for young women, the number of women in this sample is small. Despite this, statistically significant improvements were found in levels of psychological distress following group participation. The sample was a highly educated group compared with the general Australian population, which may limit the generalisability of the findings. It would also be of interest to explore the effect of group participation for women from differing cultural backgrounds by evaluating the efficacy of culture-specific support groups. A pre-and post-intervention design, rather than a randomised control design, was utilised for this study. Previous research has shown that women with breast cancer improve on psychosocial measures even without psychosocial intervention,44 so further research with young women using a control group design would overcome this limitation. Post-intervention measures were conducted following completion of the group and further longer-term follow-up would be of value in ascertaining whether gains were sustained over longer periods, as previous studies have shown mixed results in terms of the sustainability of psychological benefits of support groups for women with early-stage breast cancer.17,35,38
Clinical implications
The finding that women who participated in a psychoeducational group for young women with early stage breast cancer experienced a significant decrease in psychological distress supports suggestions that these women, who are at high risk of psychosocial morbidity, will benefit from age-specific support groups. Women who were most distressed before participation in the group program experienced significantly greater improvements on a number of measures than women who were less distressed, indicating that the program was of particular benefit to those women with a greater need for intervention.
The provision of this short-term group intervention for young women was conducted with relatively limited resources. This approach thus provides cost-effective, accessible psychosocial support and promotes opportunities for young women to meet with others of their own age in similar circumstances, reducing the sense of isolation that many young women experience when faced with a diagnosis of breast cancer.
Acknowledgments
The authors would like to thank the following individuals for their contributions to this study: group co-facilitators, Anne Walsh, Judy Rickard, Margaret Sharland, Pat Burgess, Nina Mara and Selina Consandine. We would also like to acknowledge the contribution of Dr Fran Boyle and Sr Kerrie Andrews. Finally, we are most grateful for the valuable contribution of all the women who participated in this study. Belinda Thewes is supported by a National Breast Cancer Foundation PhD Scholarship, and Bettina Meiser by a National Health and Medical Research Council of Australia Public Health Fellowship.
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