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Journal of Aging Science
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Gender Differences in Self-Perceived Personal Resources of Older Adults with Generalized Anxiety Symptoms

Friederike H Boehlen1*, Wolfgang Herzog1, Dieter Schellberg1, Imad Maatouk1, Kai-Uwe Saum2, Hermann Brenner2 and Beate Wild1

1Department of General Internal Medicine and Psychosomatics, Medical University Hospital, INF 410, 69120 Heidelberg, Germany

2Division of Clinical Epidemiology and Aging Research, German Cancer Research Center, INF 581, 69120 Heidelberg, Germany

*Corresponding Author:
Friederike H Boehlen
Department of General Internal Medicine and Psychosomatics
Medical University Hospital, INF 410, 69120 Heidelberg, Germany
Tel: +49-(0)-6221-56-8649
Fax: +49-(0)-6221-56-5749
E-mail: [email protected]

Received date: April 07, 2017; Accepted date: April 26, 2017; Published date: April 28, 2017

Citation: Boehlen FH, Herzog W, Schellberg D, Maatouk I, Saum KU, et al. (2017) Gender Differences in Self-Perceived Personal Resources of Older Adults with Generalized Anxiety Symptoms. J Aging Sci 5:178. doi: 10.4172/2329-8847.1000178

Copyright: © 2017 Boehlen FH, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Abstract

Background: Symptoms of general anxiety disorder (GAD) are common in older age, especially in women. Gender and sex differences in anxiety influence the way individuals interact with others and how they cope with new circumstances. Psychosocial resources (personal traits, social contacts, etc.) play an important role in the process of dealing with subjective worries and difficult situations. The aim of this study is to examine gender differences of self-perceived personal resources in elderly patients with GAD-symptoms.

Methods: 3124 elderly persons (ages 55-85) were included in the study at the third follow-up of the large population-based German ESTHER study. GAD-symptoms were measured with the GAD-7 (cut-point>5). Psychosocial resources were assessed during a home visit by trained study doctors using a list of 26 different items.

Results: GAD-symptoms were found in 434 individuals (13.9%; 67.1% female, 32.9% male). Self- efficacy, family, and feeling needed were the most frequently reported resources in older adults with GAD-symptoms. Personal resources (composure, humor) and social resources (partner, leisure activities) were reported significantly less frequently by elderly women compared to men. Women with GAD-symptoms showed a significantly reduced quality of life, a higher severity of somatic symptoms, and a higher degree of loneliness compared to men.

Keywords

Generalized anxiety; Disability; Mental disorders

Introduction

Anxiety in older age is common [1]. Prevalence rates of Generalized Anxiety Disorder (GAD) in older individuals range between 2.8% and 7.3% [2,3]. GAD is characterized by uncontrollable worries over a period of at least 6 months [4]. In older persons it comprises a wide range of physical vegetative symptoms such as sleep disturbances and palpitations [5]. Furthermore, individuals with GAD often show symptoms of depression [6]. GAD is associated with disability and an impaired quality of life [7]. In addition, anxiety influences the way individuals interact with family and friends and how they face challenges, often resulting in difficulties in interpersonal relationships [8].

Generalized anxiety disorder is more frequently diagnosed in females [9,10]. Women with GAD show higher levels of anxiety and a higher degree of functional impairment [3,11]. Previous studies have indicated that women have higher rates of comorbid mood disorders, whereas men with GAD-symptoms were more frequently co-diagnosed with substance use disorders or antisocial behaviour [3,10]. Biological factors such as hormonal influences and socio-cultural factors appear to contribute to gender differences in GAD.

Both physical and mental impairment, as well as socialization processes, shape the way a person perceives his or her personal strengths. Psychosocial resources play an important role in the process of coping with both physical and mental impairment as well as with the integration of new circumstances [12,13]. Resources can be personal resources (self-efficacy, optimism, composure) or social contacts (support through family, spouse, and/or health professionals). Environmental factors (financial security or work) can also be perceived as supportive elements. Current research shows that psychological and social resources correspond to physiological resilience [14], and that active participation is fundamental for the process of recovery [15].

A previous study indicated that older individuals with mental illness reported coping resources and social support significantly less frequently in comparison to non-mentally ill persons [16]. In individuals with GAD, reduced optimism and a heightened neural response to everyday worries was shown [17]. In older women self-efficacy was negatively correlated with age [18].

To date however, no study has investigated whether and how older men and women with GAD symptoms differ in their self-perceived psychosocial resources. This is the first study that is asking a large sample of older individuals with GAD-symptoms about factors in their lives that they perceive as strength-giving.

Better knowledge regarding the differences in psychosocial resources of older women and men with GAD-symptoms could provide important information for gender-specific treatment of anxiety in age.

Methods

Study sample

The data were derived from the third follow-up of the ESTHER study (German: Epidemiologische Studie zu Chancen der Verhuetung, Frueherkennung und optimierten Therapie chronischer Erkrankungen in der aelteren Bevoelkerung). The ESTHER study is a populationbased cohort study conducted in Germany. Its aim is epidemiological research on prevention, early recognition, and optimal treatment of chronic diseases in an elderly population [19,20]. The study population (n=9949 at baseline) was initially recruited between July, 2000, and December, 2002, by general practitioners in Germany in the Federal State of Saarland in the course of a health check-up that is offered to adults (older than age 55). Baseline data showed that the ESTHER study sample was representative of the general German population with respect to both demographic variables and chronic diseases [20]. Follow-ups were conducted 2, 5, and 8 years after recruitment. At the beginning of the third (eight-year) follow-up of the ESTHER study, 8265 participants were eligible. All in all, between 2008 and 2010, a total of 6063 participants took part in this part of the study. 3124 of these ESTHER participants gave their consent for an additional home visit, conducted by trained study doctors. The home visit served as a comprehensive assessment regarding functional status as well as medical, pharmacological, socio-economic, and psychosocial aspects of their life. This part of the study was based on cross-sectional data of the 3124 ESTHER participants who attended the third follow-up and the additional home visit.

Measurements

Personal resources

During a standardized interview questions regarding personal resources were asked using the following question: “What gives you strength at this time of your life?” Multiple answers were allowed, using a list of 26 different categories (see Table 1) that comprised coping resources as well as social resources and structural aspects.

Coping resources Social resources  (free-time) Social resources (family) External support Independent items
Mastery Leisure activities Partner Profess. support Financial resources
Hope Physical activity Family Social support Work
Optimism Solo activities Social activity   Religiosity
Health Colleagues   Talking to someone
Goals Volunteer work Social contact in general
Self-efficacy    
Composure
Humor
New acquaintances
Creativity
Feeling needed

Table 1: List of response options for the question: “What gives you strength at this time of your life?”

Generalized anxiety disorder symptoms

Generalized anxiety disorder symptoms were measured by using the GAD-7 (seven-item Generalized Anxiety Disorder Scale) [21]. The seven items of the GAD represent the criteria of Generalized Anxiety Disorder of the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) [22]. The GAD-7 was validated in a large sample of primary care patients and showed good psychometric properties [23]. In a previous study, in the ESTHER study sample, it was shown that in elderly patients it would be advisable to lower the cut- off-point for detecting GAD from 10 to 5 [21]. Thus, in our study, participants with a GAD-7 >5 were categorized as having symptoms of a generalized anxiety disorder.

Covariates

Diagnosis of depression and somatization symptoms: Depression was measured using the 8-item depression module of the Patient Health Questionnaire (PHQ). The PHQ-8 consists of eight of the nine DSM-IV criteria on which the diagnosis of depressive disorders is based [24]. The ninth criterion asks for suicidal ideation and was omitted in the present investigation. The following two algorithms were used to define current depression: A minor (major) depressive disorder was assumed if: (1) 2-4 (≥ 5) of the 8 items were present on “more than half the days” and one item was depressed mood or anhedonia or (2), if participants had a PHQ-8 score >10. Somatization symptoms were measured by the adapted shortened version of the PHQ-15 comprised of 13 questions that included questions about physical pain [25]. Questions concerning problems during menstruation or sexual intercourse were omitted due to the age-composition of the study sample. Persons with a somatic symptom score ≥ 13 were categorized as having “somatization symptoms” in contrast to those with a score <13 [25].

Loneliness and Social Isolation: The degree of “loneliness” was measured by using a three-item questionnaire derived from the revised UCLA Loneliness Scale that has been validated for use in large surveys [26,27]. It is comprised of three items: “How often do you feel lonely?”, “How often do you feel that you lack companionship?”, and “How often do you feel left out?”. The response categories were coded 1 (hardly ever), 2 (some of the time), and 3 (often). We calculated a total score, with higher scores indicating greater loneliness. Participants with a score of seven and greater were defined as being “more lonely”, which means that they responded to at least one of the mentioned questions with “often” and to the other questions with “sometimes”.

To assess the perceived social support received by family and friends we used the Lubben Social Network Scale–6 (LSNS-6). This is a sixitem, self-reported scale to assess social isolation in older adults. The LSNS-6 measures the frequency and the quality of contacts of a participant`s social network (including both family members and non-related persons). The score ranges from 0-30 with a cut-off of less than 12 for defining individuals as being socially isolated [28]. Two subscale scores, ranging from 0 to 15, measure the social network regarding family and friends.

Health-related Quality of Life (HRQOL): Health-related quality of life was measured with the Short-Form General Health Survey (SF-12) [29]. The SF-12 provides information on physical and mental quality of life and shows good psychometric criteria. Health-related Quality of Life is measured by a physical (PCS) and a mental (MCS) component score, each ranging from 0 to 100-with higher scores indicating a higher quality of life.

Statistical analysis

Principal components analysis (PCA) was used to reduce the 26 items by screening for underlying factors [16]. Thus, items were categorized according to 1) coping resources, 2) social resources (free-time), 3) social resources (family), and external support. Five of 26 items could not be grouped and remained independent (religiosity, financial resources, work, social contacts in general, talking to someone) (see Table 1). Those independent items were evaluated separately.

For the group of elderly people with GAD-symptoms, percentages and confidence intervals were calculated for each of the 26 resource items. Female as well as male participants were compared using Chi2- test. For the evaluation of the four resource factors, for each participant each item of a factor was coded with 0 when he/she had not reported this item as a personal resource, and coded with 1 when he/she had reported it as a personal resource. Both mean sum scores and standard deviations were calculated. Wilcoxon Rank Sum Tests were used to compare the mean sum scores between subgroups. Gender differences in HRQOL, loneliness, and social isolation were evaluated by using Chi2-tests or t-tests.

Statistical analysis was performed using SAS, version 9.4.

Results

434 participants (13.9%; 95%-confidence interval=(12.7; 15.2)) had a GAD-7 score greater than 5 and were defined as the group with symptoms of generalized anxiety disorder. All 434 participants with a GAD-score >5 answered the question regarding personal resources and were therefore included in the study.

67.1% of the included participants with GAD-symptoms were female, 32.9% male. Female participants showed significantly higher GAD-scores in comparison to men (8.3 (SD: 3.5) vs. 7.6 (SD: 2.9); p=. 022). The mean age of the study sample was 68.9 years of age (SD: 6.4). Table 2 shows the demographic characteristics of the study.

Baseline variables N (%)
Sex
    Female 291 67.1
    Male 143 32.9
Age
55-64 135 31.3
65-74 203 46.8
75-84 95 21.9
Education (years)
0-8 7 1.7
09-Oct 364 85.7
    11-12 35 8.2
>12 19 4.5
Marital status
Single 15 3.5
Married 275 64.7
Divorced/widowed 135 31.8

Table 2: Demographic characteristics of the study sample (n=434).

A high degree of loneliness was reported by 37.7% (33.1; 42.5) of all patients with GAD-symptoms; social isolation measured by the LSNS-6 was reported by 22.1% (18.3; 26.3) of older adults with GAD-symptoms. A GAD-7 score greater than 10 was found in 104 participants (3.3%: 75% female, 25% male).

Personal Resources

Total sample of GAD-patients: In the total group of older individuals with GAD-symptoms, family (80.4%, 95% -CI=(76.4; 84.1)), self-efficacy (69.4%; 95% -CI=(64.8; 73.7)), and feeling needed (65.4%, 95% -CI=(60.8; 69.9)) were the most frequently reported resources. Persons with GAD-symptoms reported family and self-efficacy significantly less frequently as a resource in comparison with persons without GAD-symptoms (p<.001; p<.001), but reported no significant difference in the perception of “feeling needed” as a resource (p=.067) (see Figure 1). There was no significant difference between female and male participants regarding the frequency of reporting these resources.

aging-science-Five-most-frequently

Figure 1: Five most frequently reported resources in persons with GAD-symptoms in comparison with persons without GAD-symptoms (%).

Gender differences: Female participants with GAD-symptoms reported religiosity significantly more frequently as a resource compared with male participants (p=.001; see Table 3). Male GAD-patients regarded coping resources such as composure (p=.001) and humor (p=.036) significantly more frequently as a resource compared to women, as well as health (p=.025), leisure activities (p<.001), and physical activity (p=.042). 77.6% of all male participants with GAD-symptoms perceived their partner as a resource, whereas only 49.5% of the female participants did so (p<.001). Men were significantly more frequently married in comparison to women (81.6% vs. 56.3%; p<. 001), but even in married individuals men reported their partner significantly more frequently as a resource in comparison to women (85.2% vs. 72.5%; p=.012). Table 3 gives an overview of the gender differences of resources in elder people with generalized GAD-symptoms.

Resources Female Male χ2(1) p value
(%, 95%-CI) (%, 95%-CI)
Religiosity 56.7 (50.8; 62.5) 39.9 (31.8; 48.4) 10.88 0.001
Composure 29.9 (24.7; 35.5) 45.5 (37.1; 54.0) 10.2 0.001
Humor 50.9 (45.0; 56.7) 61.5 (53.0; 69.6) 4.41 0.036
Health 51.6 (45.6; 57.4) 62.9 (54.5; 70.9) 5.03 0.025
Partnera 49.5 (43.6; 55.4) 77.6 (69.9; 84.2) 31.33 <.001
Leisure activities 47.1 (41.3; 53.0) 66.4 (58.1; 74.1) 14.44 <.001
Physical activity 34.0 (28.6; 39.8) 44.1 (35.8; 52.6) 4.13 0.042
amarried, single and divorced participants

Table 3: Significant gender differences of resources in older adults with generalized anxiety disorder symptoms.

The Wilcoxon rank-sum test showed that male GAD-patients reported coping resources and social resources (either free-time or family) significantly more frequently in comparison to females (coping resources: Z=2.340; p=.019; social resources (free-time): Z=3.143; p=. 001; social resources (family): Z=3.962; p<.001) (see Table 4). There was no significant difference in reporting external resources in women or men (Z=0.359 p=.072). Table 4 shows the mean sum scores of resource dimensions in male and female participants with GAD-symptoms.

  Female Male Test p value
(Mean score; SD) (Mean scores; SD)
Coping resources 5.3±3.1 6.0±2.9 Z=2.340 0.019
Social resources free-time 1.9±1.4 2.3±1.4 Z=3.143 0.001
Social resources family 1.9±1.0 2.2±1.0 Z=3.962 <.001
External resources 0.6±0.7 0.6±0.8 Z=0.359 0.072
Resources total 12.4±5.7 13.9±5.4 Z=2.527 0.012

Table 4: Comparison of resources groups of female and male participants with generalized anxiety disorder symptoms.

There was no significant gender difference regarding depression diagnosis according to the PHQ-8 in older women and men with GAD-symptoms (36.8% vs. 33.1%; p=.450), but there was a higher prevalence of somatization symptoms in women in comparison with men (29.9% vs. 16.1%; p=.002). Female individuals perceived themselves significantly more frequently as being lonely (42.4% vs. 28.7%; p=.004) in comparison to males. There was no significant difference in the mean scores of the LSNS-6 in men and women, indicating that there was no significant difference in the social network of older men and women. 21.7% of older men and 22.3% of women showed signs of social isolation (p=.877). Male individuals with GAD-symptoms showed a significantly higher MCS (mental component score of the SF-12 measuring HRQOL) in comparison to females, but no significant difference in the PCS (physical component score) (Table 5).

  Female Male t value p value
(Mean score; SD) (Mean score; SD)
Social Network
  Loneliness 6.0 (2.3) 5.2 (2.2.) 3.47 0.001
  LSNS-6 15.7 (5.4) 15.7 (5.5) 0.01 0.992
  LSNS-6 family 8.7 (3.1) 8.6 (3.1) 0.21 0.832
  LSNS-6 friend 7.0 (3.4) 7.0 (3.8) -0.1 0.916
HRQOL
  MCS 36.8 (10.5) 40.1 (11.7) -2.84 0.005
  PCS 36.5 (9.7) 36.6 (9.8) -0.07 0.943

Table 5: Gender differences in social network and HRQOL in older adults with generalized anxiety disorder symptoms.

Discussion

This is the first study that has investigated gender differences in a wide range of psychosocial resources and other supportive elements in a large population-based sample of older persons with symptoms of generalized anxiety disorder.

In our study, twice as many female individuals were found who experienced symptoms of GAD in comparison to males. Women more frequently showed a high severity of somatization symptoms, which is in line with previous studies [3,30]. Our research differed from current research in that we did not find gender differences regarding depression diagnosis in our study sample [10].

Results show that family, self-efficacy, and feeling needed were the most frequently reported resources in older adults with generalized anxiety symptoms. While participants with GAD-symptoms reported family and self-efficacy significantly less frequently in comparison to individuals without GAD-symptoms, there were no differences regarding gender in reporting these resources. In married couples the partner was significantly less frequently reported as a resource by older women with GAD-symptoms in comparison to men. This corresponds with results of the total sample of the ESTHER- study [16].

In general, it is not surprising that older persons with GAD-symptoms would report resources such as self-efficacy or mastery less frequently compared to individuals without GAD. However, our findings regarding other resources-for example the perception of family or spouse as a resource-are quite remarkable. It should therefore be explored further if persons with GAD-symptoms do perceive their family as less supportive or if they do, in fact, have fewer supportive family ties. Whisman et al., for instance, showed strong associations for marital discord for persons with GAD that could not be explained by general social dissatisfaction [8].

Furthermore, it is interesting that women with GAD-symptoms perceive their partner significantly less frequently as a resource in comparison to men. One reason could be that older women often take the caregiving position in relationships, particularly if the partner is avoidant towards social contacts and everyday activities. This corresponds with previous research that shows that wives with husbands in poor health frequently report high levels of marital conflict, but not vice versa [31]. However, in our study, explanations for this association remain speculative. Further evaluation is needed to clarify the background for this unequal pattern.

Our study indicates that in comparison to men, older women with GAD-symptoms experience loneliness more frequently. This is consistent with recent research [32]. Our study adds the interesting aspect that the social network of older men and women shows no significant difference. This raises the question if older women with GAD-symptoms perceive their social contacts as being less supportive and which aspects of their life induce the feeling of loneliness.

In contrast to women, older men with GAD-symptoms reported coping resources (composure and humor), social resources, and free-time activities (leisure activities and physical activity) significantly more frequently as a personal resource. One reason could be that older men report their strengths more frequently or that they perceive their strengths more intensely. McLean et al., [33] showed that identification with a masculine gender role may result in under-reporting symptoms of anxiety. In this context, it was supposed that men are more encouraged to display strength and to confront fears throughout their socialization, whereas in women avoidance is more accepted [33]. Women, both with and without symptoms of severe anxiety, were shown to reflect about themselves more critically displaying a tendency to ruminate more and higher levels of depression in comparison to men [34]. Other reasons could be derived from differences in the social network of women and men as well as their socialization. In this context, Stokes et al. described that older women tend to develop more “close dyadic ties” that are less related to large social networks in comparison to men [35]. Furthermore, Klose et al. showed that belonging to a higher class, working full time, and having children appeared to be supportive factors for mental illness in men only [36]. Regarding this, it can be assumed that older men have acquired a more divergent network of external contacts throughout their life and perceive external factors such as work or family more frequently as strength-giving and therefore disease preventing.

Finally, it has to be considered that older women with GAD show an increased severity of anxiety symptoms and physical impairment, that could also have an effect on the perception of personal resources [3].

Our study has two limitations: Firstly, we could only determine associations and not temporal or causal relationships; secondly, we did not use detailed questionnaires to assess the degree of specific coping resources, but rather offered a catalog of possible answers comprised of elements about the various areas. However, we decided to examine personal resources using this more generalized approach because it provided direct information on the factors that were perceived as strength-giving by older persons with GAD-symptoms. Thus, our study gives a broad overview, but misses going into detail concerning the individual items. This should be considered when interpreting our data.

Additionally, if we were to reflect on the specificity of the GADconcept in relation to psychosocial resources, we would hypothesize that the change in resources in the elderly with GAD-symptoms is similar to the change in resources in older people with other impairments. In our previous study [16], we found that older people with frailty, complexity, or mental illness reported less personal and social resources and more external resources. Our results indicate that there could be a general association between these measurement-constructs and a perception of reduced personal resources. It could therefore be, that all the constructs that measure aspects of negative well-being are broadly in the same way related to self-perceived resources. This would lead to the question if it would be advisable to offer support for older people with a perception of reduced personal resources.

The particular strengths of this study are the sample size of the study population (n=3124; 434 participants with GAD-symptoms) and the method of recording data on resources by trained study doctors. This strengthens the quality of the medical data and provides us with the exceptional possibility to connect health-care information and social variables in an elderly population. Furthermore, our study promotes a focus on the strengths of older adults with generalized anxiety symptoms and therefore does not concur with the feelings of weakness and helplessness that are often experienced by older anxious persons. Our findings could be useful for further research for investigating associations of psychosocial resources in women and men with other outcomes, such as multimorbidity or health care use.

In summary, our study shows that gender differences of generalized anxiety disorder exist not only in terms of prevalence and symptom severity, but also in the manner in which a person assesses the strength-giving factors of his or her life. Our study underlines that older women with GAD-symptoms show significantly lower levels in the perception of personal resources, a lower quality of life, and a higher level of loneliness in comparison to men. When offering psychotherapy to persons experiencing generalized anxiety disorder, these factors should be taken into account.

Acknowledgement

This study was part of the consortium “Multimorbidity and frailty at old age: epidemiology, biology, psychiatric comorbidity, medical care, and costs”. It was funded by the German Ministry of Research and Education (grant number 01ET0718). The study (including follow-up examinations) was approved by the Ethics Committee of the Medical Faculty, University of Heidelberg and the Medical Association of Saarland. The authors thank all participants for making this study possible.

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