- Research article
- Open Access
Cumulative childhood trauma and complex psychiatric symptoms in pregnant women and expecting men
BMC Pregnancy and Childbirth volume 22, Article number: 10 (2022)
Women and men having been exposed to childhood trauma would be at high risk of various mental health symptoms while awaiting a child. This study aimed to evaluate the association between cumulative childhood trauma and the accumulation of symptoms belonging to different psychiatric problems in pregnant women and expecting men.
We first examined prevalence rates of childhood trauma across our samples of 2853 pregnant women and 561 expecting men from the community. Second, we evaluated the association between cumulative childhood trauma and symptom complexity (i.e., the simultaneous presentation of symptoms belonging to multiple psychiatric problems) using subsamples of 1779 pregnant women and 118 expecting men. Participants completed self-reported measures of trauma (Childhood Trauma Questionnaire) and psychiatric symptoms (PTSD Checklist for DSM-5; Kessler Psychological Distress Scale; State-Trait Anger Expression Inventory-2; Self and Interpersonal Functioning Scale).
Trauma was more frequent in pregnant women than in expecting men and in participants reporting sociodemographic risk factors than in those not reporting any. A dose-response relationship was observed between the number of different traumas reported by pregnant women and expecting men and the complexity of their psychiatric symptoms, even when controlling for the variance explained by other risk factors. Women having been exposed to cumulative childhood trauma were 4.95 times more at risk of presenting comorbid psychiatric problems during pregnancy than non-exposed women.
Childhood trauma is frequent in the general population of pregnant women and expecting men and is associated with symptom complexity during the antenatal period. These findings call for delivering and evaluating innovative trauma-informed antenatal programs to support mental health and adaptation to parenthood in adults having been exposed to childhood trauma.
About one third of adults report having been exposed to childhood trauma under the form of abuse or neglect before 18 years old [1, 2]. Prevalence rates would differ according to sex, with women being more likely to report sexual abuse and men physical abuse . The prevalence of childhood trauma in pregnant women and expecting men remains uncertain , but existing data suggest that childhood abuse and neglect is also frequent in this population [4, 5].
A vast body of knowledge has indicated that childhood trauma exerts an important toll on maternal mental health during the perinatal period. Indeed, women with histories of childhood trauma report higher rates and severity of depression, post-traumatic stress disorder (PTSD), dissociation, and personality disorders than non-exposed women during pregnancy [6,7,8,9,10] and postpartum [11, 12]. Although studies on fathers are sparse, previous research also suggests that exposure to childhood trauma would be associated with an increased severity of symptoms across multiple diagnoses among expecting men .
Previous research on mental health in pregnant women and expecting men mainly considered psychiatric disorders in isolation, whereas the evidence suggests that exposure to trauma could be an enhancer for the progressive accumulation of deficits and difficulties across multiple domains of functioning [13,14,15,16,17]. Therefore, expecting parents exposed to childhood trauma may not only display more severe symptoms than those without trauma, but may also have a complex clinical profile characterized by the simultaneous presentation of symptoms belonging to multiple psychiatric disorders , which previous research has referred to as the level of symptom complexity [13,14,15, 17, 19]. To our knowledge, only a handful of studies examined whether childhood trauma was associated with complex psychiatric symptomatology in pregnant women. First, in a community sample of 1 581 pregnant women, those having been exposed to childhood trauma were more likely to report a combination of PTSD and depression or affect dysregulation than non-exposed women . More recently, Anastas and colleagues  reported that the accumulation of adverse childhood events was positively correlated with a score of psychopathology derived from a questionnaire assessing anxiety, depression, dissociation, PTSD and anger in 36 pregnant teens. Understanding the determinants of complex comorbid symptoms in pregnant women and expecting men is important considering that such symptoms are more difficult to treat using pharmacological  and psychological approaches , have more severe impacts on functioning , and could therefore be more likely to affect parenthood and offspring development than non-comorbid disorders.
The present study aims to evaluate the association between cumulative childhood trauma (defined as the experience of multiple forms of abuse and neglect before 18 years old) and the complexity of psychiatric symptoms in pregnant women and expecting men. Building on previous studies reporting a linear relationship between cumulative childhood trauma, symptom complexity and psychiatric comorbidities in a non-obstetric population [13,14,15, 17, 18], we hypothesized that cumulative childhood trauma would be associated with greater symptom complexity and comorbid psychiatric problems. Given the limited number of studies evaluating the prevalence of trauma in community samples of expecting parents, we began by estimating the rates and characteristics of childhood trauma in our samples of pregnant women and expecting men from the community.
Study design and sample
A sample of 2853 pregnant women (Mage = 29.36, SD = 4.31, range = 18-46) and a sample of 561 expecting men (Mage = 30.84, SD = 5.41, range = 20-55) were recruited in the province of Quebec, Canada using three complementary strategies. The first strategy permitted us to recruit 886 women and 425 men. These participants were invited to participate in the study during prenatal classes between July 2015 and September 2018. They reported on their history of trauma but did not complete measures of psychiatric symptoms. The second strategy had us recruit 630 women and 117 men. These participants were informed of the study at their first pregnancy monitoring appointment between April 2018 and March 2021. Those who agreed to participate were subsequently contacted during the second trimester of pregnancy and invited to complete the full set of measures. The third strategy permitted us to recruit 1337 women and 19 men. These participants were recruited online, through social media, between April 2nd and April 13th, 2020. Sociodemographic characteristics for the three sets of participants are reported in Tables S1 and S2. Inclusion criteria were being 18 years old or older, having sufficient reading skills to complete self-reported instruments and being pregnant/awaiting a child. There were no exclusion criteria based on psychiatric diagnoses. Studies received ethical approval from the Comité d’éthique de la recherche avec des êtres humains de l’Université du Québec à Trois-Rivières and the Comité d’éthique de la recherche du Centre intégré universitaire de santé et de services sociaux de la Mauricie-et-du-Centre-du-Québec.
Childhood Trauma Questionnaire
Childhood trauma was assessed using the French version  of the Childhood Trauma Questionnaire (CTQ-28) . The 28-item self-reported measure examines five types of childhood trauma: physical, emotional, and sexual abuse as well as physical and emotional neglect. Responses to each item are rated on a 5-point Likert scale, ranging from 1 (never true) to 5 (very often true). Cut-offs are validated for each subscale (physical abuse ≥8, emotional abuse ≥ 10, sexual abuse ≥ 8, physical neglect ≥ 8 and emotional neglect ≥ 15) . In the current study, participants with at least one subscale with a score above the cut-off were classified as having been exposed to childhood trauma, whereas cumulative childhood trauma was defined as having been exposed to at least two different types of trauma. The CTQ-28 shows a good validity across diverse clinical and general populations . The Cronbach’s alpha for the CTQ in this study was α = .82.
PTSD Checklist for DSM-5
Post-traumatic stress symptoms were assessed using the validated French version  of the PTSD Checklist for DSM-5 (PCL-5) . This 20-item self-reported questionnaire is based on the PTSD diagnostic criteria of the DSM-5. Responses are rated on a 5-point Likert scale ranging from 0 (not at all) to 4 (always). Higher scores reflect greater severity of symptoms and a score at or higher than 33 would be highly predictive of a DSM-V diagnosis of PTSD . Both the French and the English versions have good reliability (internal consistency, temporal stability, test-retest) and convergent validity [27,28,29]. The Cronbach’s alpha for the PCL-5 in this study was α = .92.
Kessler psychological distress scale
Anxiety and depression were measured using the French version  of the 10-item Kessler Psychological Distress Scale (K10) . Responses are rated on a 5-point Likert scale ranging from 1 (none of the time) to 5 (all of the time). We used a clinical cut-off of 30 as 76.3% of adults with scores ≥ 30 would meet the diagnostic criteria for an anxiety, affective or substance use disorder . The instrument is adequate for screening mood and anxiety disorders in pregnant women . The Cronbach’s alpha for the K-10 in this study was α = .88.
State-trait anger expression inventory-2
Current intensity of angry feelings and expression of anger was assessed using the State Anger scale of the State-Trait Anger Expression Inventory-2 (STAXI-2) . This scale contains 15 items, and responses are rated on a 4-point Likert scale ranging from 1 (almost never) to 4 (almost always). Scores higher than two standard deviations (T scores of 70) in Spielberger’s normative sample of women (> 28) and men (> 32) aged between 20 and 29 years were here considered as a level of anger interfering with functioning . The Cronbach’s alpha for the State Anger scale in this study was α = .93.
Self and interpersonal functioning scale
Global personality impairment was assessed using the 24-item Self and Interpersonal Functioning Scale (SIFS) . Its items are rated on a 5-point Likert scale ranging from 0 (this does not describe me at all) to 4 (this totally describes me), higher scores indicating higher dysfunction. We used a clinical cut-off of ≥ 1.90 which reflects moderate severity personality disorders . The SIFS shows good validity indices across samples [35, 37, 38]. The Cronbach’s alpha for the SIFS in this study was α = .86.
Data analyses were performed using the Statistical Package for Social Sciences, version 27.0. Data screening for normality detected univariate outliers (standardized scores over 3.29). To reduce their impact on the distribution, we replaced outliers by a raw score of one unit larger than the next highest score in the distribution . Mahalanobis distances showed no further multivariate outliers, and variables were normally distributed after this transformation.
Descriptive analyses were first performed to determine the proportion of adults who experienced childhood trauma. All analyses were performed separately for men and women. Chi-squares were next used to evaluate whether childhood trauma varied as a function of individual or sociodemographic variables. Complementary continuous and categorical approaches were used to evaluate whether childhood trauma was associated with complex psychological symptoms. For the continuous approach, we computed a symptom complexity score by adding the standardized scores of the four measures of psychiatric symptoms. A Pearson correlation was first performed to evaluate the association between the number of childhood trauma and the complexity of psychiatric problems. We next evaluated whether childhood trauma and complexity of symptoms shared variance that could not be accounted for by other risk factors by performing a hierarchical regression analysis including four sociodemographic variables (age, education, familial income, and marital status) in a first set of predictors, and childhood trauma in a second step. For the categorical approach, we computed a score of comorbid psychiatric problems by adding the number of psychiatric symptoms reaching the clinical cut-offs of the instruments. It is noteworthy that we used severe cut-offs for each instrument to ensure that participants were highly likely to have a psychiatric diagnosis. We used chi-square analyses to evaluate the distribution of comorbid psychiatric problems in participants without trauma, single trauma, and cumulative trauma. We also calculated the relative risk (RR) of presenting comorbid problems in participants exposed to a single type of trauma and to cumulative trauma while using participants without trauma as the reference group.
Sociodemographic data for women and men are presented in Table 1. Overall, participants were mainly married or in common-law relationships (96.8%), Caucasian (95.9%) and had some post-secondary education (90.7%). Median household income was between C$85 000 and C$95 000. Our sample of expecting adults (mainly women) is thus representative of mothers’ from the Province of Quebec where 91.5% of women between 25 and 34 years have post-secondary education  and the median income for households of two adults and one child is C$93 400 . Analyses on symptom complexity were performed on a subsample of 1779 women and 118 men with complete data. Participants who did not complete the full data set (data on childhood trauma only) were not different from participants who completed all measures in terms of exposure to trauma (respectively 32.4% and 34.8%), χ2(1) = 2.22, p = .14.
Trauma characteristics and prevalence
Thirty-five percent of pregnant women (n = 999) and 28% of expecting men (n = 156) reported having been exposed to at least one type of trauma during childhood. As shown in Table 2, the most prevalent types of trauma were physical neglect and emotional abuse. Half of the women (49.2%) and 44% of the men with a history of trauma experienced multiple types of trauma. Women were significantly more likely to report childhood trauma (35.0%) than men (27.8%), particularly under the forms of sexual and emotional abuse.
Reports of trauma were more frequent in multiparous (38.6%) than in primiparous (31.7%) parents, χ2(1) = 14.25, p < .001, but did not change according to the trimester of pregnancy during which it had been assessed, χ2(2) = 0.84, p = .66. Prevalence of trauma was higher among participants reporting current sociodemographic risk factors, including being younger than twenty years old at the beginning of pregnancy [73.7% vs 33.8%; χ2(1) = 13.30, p < .001], having an income inferior to the low-income cut-off [55.0% vs 32.7%; χ2(1) = 40.22, p < .001], not having completed high school [53.3% vs 33.6%, χ2(1) = 12.64, p < .001] and being a single parent [62.0% vs 33.2%, χ2(1) = 28.17, p < .001]. Thirty-four percent (34.1%, n = 77) of women and 28.6% of men (n = 8) reporting at least one sociodemographic risk factor had experienced cumulative childhood trauma, significantly higher rates than women [15.0%, n = 277; χ2(2) = 63.75, p < .001] and men [10.4%, n = 12; V(2) = 0.21, p = .04] not reporting any risk factor.
Cumulative childhood trauma, symptom complexity and comorbid psychiatric problems
A dose-response relationship between the number of traumas experienced during childhood and the complexity of psychiatric symptoms during pregnancy was observed in women (r = 0.31, p < .001) and men (r = 0.44, p < .001) (Figure 1). Hierarchical regression analyses showed that childhood trauma significantly improved the prediction of symptom complexity over the effect of sociodemographic risk factors (Table 3) in both women (ΔR2 = 8.3%) and men (ΔR2 = 22.2%).
Analyses using categorical scores yielded similar results. Women and men exposed to cumulative childhood trauma had a greater probability of experiencing comorbid problems during pregnancy (respectively 15.2% and 18.8%) than adults who experienced a single type of trauma (9.8% of women and no men) or no trauma (3.4% of women and no men) (Table 4). The relative risk of presenting comorbid problems during pregnancy was of 2.78 in women who experienced one type of trauma and of 4.95 in women with cumulative trauma, in comparison to women without trauma.Relative risks for men could not be estimated given the small sample size and the absence of men presenting comorbid psychiatric problems without a history of trauma.
Our study examined the association between cumulative childhood trauma and symptom complexity in pregnant women and expecting men. Our findings showed a dose-response relationship between the number of different traumas pregnant women and expecting men had been exposed to during their childhood and the accumulation of symptoms belonging to different psychiatric problems, including symptoms of PTSD, anxiety, depression, anger and personality disorders. The variance in psychiatric symptomatology explained by childhood trauma was more important than the variance explained by other important sociodemographic risk factors, namely teen pregnancy, having a low income, not having completed high school and being a single parent. Our results using thresholds previously validated against psychiatric diagnoses additionally revealed that pregnant women having been exposed to single and cumulative trauma during childhood were respectively at a 2.78- and 4.95-times greater risk of presenting comorbid psychiatric problems during pregnancy, in comparison to women without trauma. However, a small proportion of women without childhood trauma also reported comorbidities, suggesting that trauma is a powerful enhancer of the aggregation of psychiatric problems, but not a necessary condition.
These results are in line with various studies showing that trauma affects multiple spheres of functioning over the sole presence of PTSD symptoms [13,14,15, 17, 18]. For instance, Briere and colleagues first observed, in 2453 female university students, a linear relationship between cumulative childhood trauma and symptom complexity, operationalized by the number of clinical scales exceeding the threshold . Cloitre and colleagues also reported that each additional type of trauma experienced during childhood increased symptom complexity in adulthood by 17% . Finally, Steine and colleagues similarly revealed a significant dose-response relation between cumulative childhood trauma and a measure of symptom complexity based on self-reported symptoms of PTSD, anxiety, depression, eating disorders, insomnia, and physical and emotional pain amongst adult survivors of sexual abuse . However, none of these studies had investigated the association between cumulative childhood trauma and symptom complexity during the antenatal period.
We also took the opportunity provided by our study to estimate the rate of self-reported childhood trauma in a large sample of pregnant women and expecting men from the community. Our findings showed that childhood trauma is highly prevalent, with 35% of pregnant women and 28% of expecting men in our sample reporting at least one type of abuse or neglect according to the validated cut-offs of the Childhood Trauma Questionnaire. This rate is similar to what has been reported in non-pregnant samples of adults using the same instrument . Furthermore, our prevalence rates are representative of those obtained from large population-based studies which generally reported that around a third of adults from the general population experienced childhood trauma [1, 2]. Moreover, our study adds to the small body of knowledge about trauma in expecting fathers. We observed that expecting fathers were less likely to report having experienced sexual and emotional abuse than pregnant women, resulting in lower rates of exposure to trauma and cumulative trauma. Despite these lower reports, the size of the association between cumulative trauma and the complexity of psychiatric symptoms during the antenatal period was slightly larger in men than in women. The higher prevalence of sexual abuse  and cumulative trauma  in women as well as the association between trauma and complex psychopathology in expecting men  is consistent with previous studies.
Our findings that trauma is frequent in expecting parents from the community and that cumulative trauma drastically increases the risk of presenting complex psychiatric symptoms during pregnancy have implications for scientific research and perinatal practices. Indeed, a history of trauma would negatively impact the experience of parenthood [6, 44] and the quality of parenting . A recent synthesis of meta-analyses also revealed that parental experiences of childhood trauma would figure amongst the most important risk factors for childhood maltreatment . Cumulative childhood trauma would further increase the risk of continuity of maltreatment through the next generation . Maternal childhood trauma has also been associated with a variety of adverse child outcomes such as preterm birth and low birth weight , difficult temperament , developmental delays , emotional and behavioral difficulties , poor overall health  and insecure or disorganized attachment . Importantly, maternal mental health would be a crucial mechanism linking exposure to trauma in mothers to poor maternal confidence and antenatal attachment , pregnancy complications  as well as to poor child outcomes . Our findings suggest that pregnant women and expecting men who experienced significant adversity during their childhood should be considered as particularly vulnerable and should be closely monitored. Innovative interventions with this population may be necessary  considering that comorbid disorders, as well as disorders that arise from a history of childhood trauma, would be more resistant to treatment . To date, only a few evidence-based antenatal interventions have been designed to address the specific needs and challenges of pregnant women with histories of childhood trauma [57,58,59] but it remains to be determined whether or not such psychological interventions contribute to lowering the complex psychiatric symptomatology frequently encountered in this population.
The results of our study should be interpreted in light of some limitations. First, due to the correlational nature of our study, no causal association between our variables can be inferred. Second, the evaluation of childhood trauma was retrospective, which is prone to recall bias. In this regard, a recent study reported inconsistencies in retrospective reports of childhood abuse across the perinatal period, which could be partly explained by psychosocial risk factors . Third, self-reported instruments were used to assess psychological symptoms. Future studies should consider using standardized clinical interviews to increase the validity of the findings. Fourth, we found no consensus on how to measure the concept of symptom complexity. Our approach has the advantage of capturing a large spectrum of symptoms, including externalized problems, internalized problems, trauma-related symptoms, and personality dysfunctions, as recommended in a recent research on symptom complexity . In the absence of a common definition of symptom complexity, comparison of findings across studies will remain limited. Fifth, lifetime traumas were not taken into account, whereas some studies have found that traumatic experiences in childhood and adulthood can have cumulative effects on mental health . Finally, our study included a minority of men, but given the paucity of data on expecting men, it seemed appropriate to include them. However, the comparisons between men and women should be interpreted with caution.
Overall, this study showed that the accumulation of traumatic experiences during childhood and adolescence is associated with complex psychiatric symptoms during pregnancy in men and women, over and beyond the effect of sociodemographic risk factors. These symptoms may in turn compromise the experience of parenting and the development of the child. Since our results highlighted that such trauma is highly frequent in the general population of pregnant women and expecting men, the inclusion of the paradigm of trauma-informed care in obstetric and gynecologic practices appears well justified. Such practices should recognize the impact of trauma and understand paths for recovery, recognize the signs and symptoms of trauma, respond by incorporating trauma knowledge into policies and practices, and resist actively to re-traumatization .
Availability of data and materials
The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.
post-traumatic stress disorder
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The authors wish to thank the pregnant women and expecting fathers who participated in our study as well as the research coordinators and assistants from the STEP Project (Supporting the Transition to and Engagement in Parenthood) for their contribution.
This work was supported by the Public Health Agency of Canada [grant number 1617-HQ-000015], the Canada Research Chairs [grant number 950-232739], the Fonds de recherche du Québec – Santé [grant number 268308] and the Fonds de recherche du Québec Société et Culture [grant number 2018-NP-204630].
Ethics approval and consent to participate
The three studies received ethical approval from the Comité d’éthique de la recherche du Centre intégré universitaire de santé et de services sociaux de la Mauricie-et-du-Centre-du-Québec (CER-2014-027; CER-2016-016-11) and the Comité d’éthique de la recherche avec des êtres humains de l’Université du Québec à Trois-Rivières (CER-15-210-07; CER-16-226-10; CER-20-266-10). Written informed consent was obtained from all participants. All tests used in this study could be administered free of charge for non-commercial research and educational purpose. Permission was granted by original authors when needed.
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Garon-Bissonnette, J., Bolduc, MÈ.G., Lemieux, R. et al. Cumulative childhood trauma and complex psychiatric symptoms in pregnant women and expecting men. BMC Pregnancy Childbirth 22, 10 (2022). https://doi.org/10.1186/s12884-021-04327-x
- child abuse
- complex trauma
- symptom complexity
- mental health