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Paternal and maternal bonding styles in childhood are associated with the prevalence of chronic pain in a general adult population: the Hisayama Study
© Anno et al. 2015
Received: 15 January 2015
Accepted: 22 July 2015
Published: 31 July 2015
Previous research has suggested that extraordinary adverse experiences during childhood, such as abuse, are possible risk factors for the development of chronic pain. However, the relationship between the perceived parental bonding style during childhood and chronic pain has been much less studied.
In this cross-sectional study, 760 community-dwelling Japanese adults were asked if they had pain that had been present for six months or more. They completed the Parental Bonding Instrument (PBI), a self-administrated questionnaire designed to assess perceived parental bonding, and the Patient Health Questionnaire-9 to assess current depressive symptoms. The PBI consists of care and overprotection subscales that are analyzed by assigning the parental bonding style to one of four quadrants: Optimal bonding (high care/low overprotection), neglectful parenting (low care/low overprotection), affectionate constraint (high care/high overprotection), and affectionless control (low care/high overprotection). Logistic regression analysis was done to estimate the contribution of the parental bonding style to the risk of chronic pain, controlling for demographic variables.
Compared to the optimal bonding group, the odds ratios (ORs) for having chronic pain were significantly higher in the affectionless control group for paternal bonding (OR: 2.21, 95 % CI: 1.50-3.27) and for maternal bonding (OR: 1.60, 95 % CI: 1.09-2.36). After adjusting for depression, significance remained only for paternal bonding.
The results demonstrate that the parental bonding style during childhood is associated with the prevalence of chronic pain in adults in the general population and that the association is more robust for paternal bonding than for maternal bonding.
Chronic pain is a major health care problem that has a considerable impact on human suffering and enormous economic implications for society. Although the definition of chronic pain is not uniform across epidemiological studies of pain, its reported prevalence in the general population ranges from 11 to 55 % [1, 2]. Chronic pain is known to be a complex biopsychosocial condition influenced by a wide range of psychosocial factors, such as beliefs about pain, pain-related fear, self-efficacy, psychological distress (catastrophizing, anxiety, depression), work-related problems, compensation status, and lack of social support [2, 3]. Therefore, in order to minimize the negative impact of chronic pain on the quality of life, it is important to identify the psychosocial factors associated with the development and persistence of chronic pain.
Adverse experiences during childhood are possible risk factors for the development and persistence of chronic pain. In fact, several studies have reported a positive relationship between childhood physical or sexual abuse and several chronic pain-related problems in adulthood [4–6]. In addition, a number of studies have also demonstrated that adverse experiences in childhood, other than abuse, are predictive of the development of chronic pain. For example, one longitudinal study reported that adverse childhood physical and psychological experiences, such as hospitalization following a traffic accident, institutional care, and the death of the mother, increased the risk of developing chronic widespread pain as an adult . Moreover, these associations were not explained by concurrent psychological distress or social class in adulthood. Thus, it seems likely that extraordinary adverse events during childhood are related to the development of chronic pain later in life; however, the relation to childhood-related factors in daily life are largely unknown.
Bowlby  proposed that the early relationship between the parent and child (i.e., “attachment”) plays a crucial role in normal childhood development and long-term functioning. A child who has a history of secure attachment to parents usually grows to be a secure, self-reliant, and cooperative adult. On the other hand, if parents fail to meet the child’s needs, normal childhood development is adversely affected, leading to the expression of the maladaptive personality characteristics and mental disorders such as depression that are often found in patients with chronic pain. A growing body of empirical evidence suggests that adult attachment styles are related to pain-related variables. In pain free individuals, insecure attachment is associated with lower pain threshold and higher pain related distress [9, 10]. In samples of patients with a chronic pain condition, those with insecure attachment reported significantly higher levels of pain intensity, disability, and pain related suffering and lower level of pain self-efficacy [11–13]. These studies suggest that attachment style is related to adjustment to a pain experience and a vulnerability to the development of chronic pain conditions.
Parker reviewed attachment studies in order to identify key parental behaviors and attitudes that affect the formation of the attachment styles of their children . Accordingly, they found that parental “care” and “overprotection” were two main factors that can affect bonding experiences with parents. It is reasonable to speculate that parental care and overprotection during childhood could affect the development and exacerbation of chronic pain later in life. However, there are few studies that address this issue in a community sample.
In the present study, we used the Parental Bonding Instrument (PBI), a self-report questionnaire developed to evaluate parental behavior styles, to examine if parental care and overprotection during childhood is related to the prevalence of chronic pain in a general adult population .
The Hisayama study, an epidemiological study of cerebrovascular and cardiovascular diseases, was established in 1961 in Hisayama Town, a suburb of the Fukuoka metropolitan area on the island of Kyushu in Japan. Surveys of the entire community regarding the health status of residents aged ≥40 years have been repeated every five years since 1961 . In 2011, a cross-sectional survey was done for the present study. Data for the current analyses were obtained from survey responses to questions regarding pain and psychosocial variables. Of 2250 residents who responded, 840 (37.3 %) consented to participate in this study. After excluding the respondents (n = 56) who did not fully complete the questionnaire or who rated only one or none of their parents on the PBI due to parental death or no contact with either parent in childhood (n = 24), the data of 760 (286 men and 474 women) were available for analysis. This study was approved by the Kyushu University Institutional Review Board for Clinical Research, and written informed consent was obtained from all of the participants.
Age, sex, marital status, and education level were collected as background information. Marital status was classified as never married, divorced, separated, widowed, married, or cohabiting. The educational level was classified as follows: ≤9 years, 10–12 years, and >12 years.
Assessment of parental bonding
The PBI score reflects the actual parenting attitude, based on studies that used corroborative witnesses and independent observers [16, 17]. The PBI has long-term stability , and its subscales have a high level of test-retest reliability and internal consistency . The Japanese version of the PBI has also been shown to have adequate validity . For the present study, the respective internal consistencies (Cronbach’s coefficient alpha) of the care and overprotection subscales were 0.91 and 0.83 for paternal bonding and 0.88 and 0.83 for maternal bonding.
Assessment of depression
Depression was measured using the Patient Health Questionnaire-9 (PHQ-9), a self-report questionnaire that has been shown to be a reliable and valid assessment tool for both the diagnosis of depression and the evaluation of depression severity in primary care settings . The PHQ-9 assesses the symptoms of depression over the past two weeks using nine questions rated on a 4-point scale; 0 (not at all) to 3 (nearly every day). These questions are based on the Diagnostic and Statistical Manual of Mental Disorders, fourth edition (DSM-IV) diagnostic criteria for major depression. Examples of items include ‘Little interest or pleasure in doing things’ and ‘Feeling down, depressed, or hopeless’. The sum of the nine items is calculated to obtain a depression score ranging from 0 to 27. Depression scores are categorized into three groups; minimal (<5), mild (5–9), and moderate to severe (>9). The PHQ-9 is useful for the evaluation of the depressive state of persons with common diseases and chronic pain-related conditions [22, 23]. The validity of the Japanese version of the PHQ-9 has been confirmed .
Assessment of chronic pain
Participants were first asked if they were experiencing any pain and then were asked about the duration of the pain. Chronic pain was defined as pain that had been present continuously or intermittently for ≥6 months. Participants were also asked to rate the average intensity of their pain in the past week on a visual analog scale (VAS). The anchors were “No pain” (0 mm) and “Pain as bad as it could be” (100 mm). The VAS for pain has been shown to be a reliable and valid measure of pain intensity . Participants with pain identified their primary pain site from a list of ten sites according to the International Association for the Study of Pain site categories : Head and face, neck, shoulder and upper limbs, thoracic region, abdomen, lower back, lower limbs, pelvic region, perineal and genital region, and multiple sites.
Each PBI subscale was divided into three levels based on the tertiles of the scores from the total study sample. The prevalence of chronic pain was tested for trends across each of the PBI subscale score levels using logistic regression analysis. In order to account for the interaction between the care and overprotection subscales, each subscale was dichotomized at its cut-point and combined. Thereafter, paternal and maternal bonding was classified into quadrants. The quadrants of parental bonding were used to compare the prevalence of chronic pain by each parent. Multivariable logistic regression analysis was then done to estimate the contribution of the parental bonding style to the risk of chronic pain, while controlling for the demographic variables. Additionally, we adjusted for the PHQ-9 score to estimate the influence of depression on the association between a parental bonding style and chronic pain. The “optimal bonding” quadrant of parental bonding style was used as the reference category when estimating the risk of chronic pain in the other three quadrants. These analyses were done for men and women separately. Tests for a statistical interaction between the parental bonding style and sex of the participants were conducted by entering interaction terms for the quadrants of parental bonding and the sex of the participants in multivariate model. For all data handling and statistical tests, SPSS v17.0 for Windows (SPSS Inc., Chicago, USA) was used.
Characteristics, PBI scores, and chronic pain prevalence
n = 760
Marital status (%)
Education level (%)
PHQ-9 score (%)
Moderate to severe (≥10)
Chronic pain (%)
In this study, the optimal parenting style for chronic pain is defined as a combination of the highest tertile of care and lowest tertile of overprotection by both parents, as shown in the data of Fig. 2 and as illustrated in Fig. 1, because the participants who belonged to both tertiles had the lowest prevalence of chronic pain. Binary variables were generated using these tertile cut-points. The cut-points for the paternal care and overprotection scores were 31 and 5 points, respectively. For maternal bonding, the care and overprotection cut-points were 33 and 4 points, respectively. Scores higher than the cut-points were defined as “high”, while scores equal to or below the cut-points were defined as “low” in the current study.
Odds ratios for chronic pain according to the PBI quadrant
Parental bonding style
Number of subjects
Number with chronic pain
Multivariable-adjusted (demographic and depression)b
OR (95 %CI)
OR (95 %CI)
OR (95 %CI)
Additionally, the bonding styles were divided as optimal and non-optimal to determine the prevalence of chronic pain according to the combination of paternal (optimal or non-optimal) and maternal (optimal or non-optimal) bonding. In comparison with the combination paternal optimal/maternal optimal, significant differences were found for the paternal non-optimal/maternal optimal (OR: 2.66, 95 % CI: 1.28-5.54, P = 0.009) and paternal non-optimal/maternal non-optimal bonding combinations (OR: 1.72, 95 % CI: 1.10-2.68, P = 0.018) after adjustment for demographic variables and depression. The combination paternal optimal/maternal non-optimal was not significantly different (OR: 1.25, 95 % CI: 0.61-2.58, P = 0.538). The interaction effects between the parental bonding styles and the sex of the participants on the presence of chronic pain were not significant between paternal (P = 0.60) and maternal bonding (P = 0.68).
This study is the first report, as far as we know, that presents the relationship between parental bonding styles in childhood and the prevalence of chronic pain in adulthood in a general population. Lower levels of paternal care and higher levels of paternal and maternal overprotection were associated with an increased risk of chronic pain later in life in this community-based sample. Moreover, the PBI subtype analysis demonstrated that the group characterized by low care and high overprotection (“affectionless control”) was significantly more likely to have chronic pain than the group characterized by high care and low overprotection (“optimal bonding”) for both parents. Interestingly, paternal bonding was more robustly associated with the presence of chronic pain than was maternal bonding. After adjusting for depression, paternal bonding remained associated with the presence of chronic pain, but maternal bonding was not. These results suggest that the parental bonding style during childhood is related to the prevalence of chronic pain in adults in the general population. These associations were not significantly different between men and women.
A number of studies using the PBI have found that low care and high overprotection are linked with maladaptive characteristics in adults, such as low self-esteem , poorer interpersonal relationships [28–30], and difficulties coping with stress . Reports also indicate that this PBI pattern contributes to several psychiatric disorders , including anxiety disorder , substance abuse, borderline personality disorder  and eating disorder . The accumulated evidence demonstrates a particular association between adverse parental bonding and the development of depression in clinical and community samples [36, 37]. Depression is also recognized as a risk factor for chronic pain . Supporting this, the current study found that the magnitude of the association between parental bonding and chronic pain attenuated after adjusting for depression. These findings collectively suggest that depression influences the link between parental bonding and chronic pain.
In the current study, the association between paternal bonding and chronic pain remained significant after the adjustment for depression, whereas the association with maternal bonding did not. These findings raise the possibility that maternal bonding may influence the prevalence of chronic pain mediated mainly by depression, while paternal bonding may have additional mechanisms. The reason for this difference between parents is currently unknown; however, it may be related to gender differences in parental influence on the development of a child’s coping strategies: Fathers are more likely to promote active, autonomous, and curious attitudes in children through encouraging their children to be independent, adventurous, and risk taking; whereas mothers place importance on emotional security and personal safety [39, 40]. The fact that fathers have been shown to be much more likely to use physical punishment and abuse than mothers in several epidemiological studies may also be related to these findings [41, 42]. Alternatively, the limited statistical power of this study may potentially explain the stronger effect of paternal bonding compared to that of maternal bonding; the median score for maternal care (31) was near the upper end of its range (36), which may have limited the ability to evaluate the effects of maternal care. Clearly, further studies are needed to elucidate the mechanism(s) whereby parental care affects the development of chronic pain in a gender-dependent fashion [34, 39].
This study has several limitations. First, the design is cross-sectional. As a result, no conclusions can be drawn regarding the causality or temporal order of the relationships. Namely, we cannot determine if parenting during childhood actually contributes to the development of chronic pain in adulthood or if the presence of chronic pain influences memories about the parenting actually received. Prospective longitudinal studies are needed to clarify the contribution of parenting to the development of chronic pain, although it will take several decades. Second, the assessment of parental bonding was based on a self-reported, retrospective measure. Although the PBI has been shown to be independent of the current mood state or life events  and has adequate test-retest reliability for a retrospective period of 20 years , we cannot rule out the possibility that recall bias and the current mood state during the study influenced the results. However, a perceived experience other than the objective manner of parents, such as harassment problems, might be more important in individual social pain experience. Third, a substantial number of residents participated in the Hisayama survey, but a little fewer than half agreed to participate in this survey. Therefore, selection bias may have influenced the results, and replication of the current findings using other community-based samples is needed. Fourth, most of the previous studies using PBI quadrants targeted relatively small clinical samples with mental problems. The available data on the distribution ratio of PBI quadrants in general population is limited. In most of these studies, assignment to high or low categories was conventionally based on the following cut-points: low care 24 for fathers and 27.0 for mothers and high overprotection 12.5 for fathers and 13.5 for mothers. These cut-points were determined on the basis of the mean scores of non-clinical Australian samples matched with depressive patients . However, given the differences in culture and study population, it is not necessarily appropriate to apply the above-mentioned cut-points to the Japanese general population. Therefore, we used different cut-points based on this population. Further studies are needed in regards to the appropriate cut-points in consideration of chronic pain in the general population. Finally, we used only depression as a potential mediator between parenting and the presence of chronic pain. Therefore, measures of other possible relevant factors, such as anxiety and pain-related fear, coping, abuse experience, and other family-of-origin variables should be included in future studies.
The results show, in a general population, that perceived parental care and overprotection during childhood are related to the risk of chronic pain in adulthood. Moreover, mass-education on parenting behaviors for optimal bonding and secure attachment may be one of the most promising preventive initiatives from the view of global health, beyond the concept of attachment. Clearly, further studies are necessary because the establishment of optimal bonding between child and parent through either the education of parents or the implementation of skill training programs may reduce the risk of the future development of chronic pain.
MH was supported in part by Grants-in-Aid for Scientific Research C (MEXT KAKENHI Grant Number 21590766 and 26460911) from the Ministry of Education, Culture, Sports, Science and Technology of Japan and by a Health and Labor Sciences Research grant from the Ministry of Health, Labor and Welfare of Japan (H23-Pain –Ippan-001).
We thank the staff members of the Department of Health and Welfare of Hisayama for their cooperation in this study. We also thank Mark P. Jensen for his generous advice, Masabumi Minami for scientific assistance, and Ryota Nakayama for technical support for the electronic processing of the data.
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