Characterizing the nature of worry in a sample of perinatal women with generalized anxiety disorder

Canadian Network for Mood and Anxiety Treatments 2024 Clinical Practice Guideline for the Management of Perinatal Mood, Anxiety, and Related Disorders: Guide de pratique 2024 du Canadian Network for Mood and Anxiety Treatments pour le traitement des troubles de l'humeur, des troubles anxieux et des troubles connexes périnatals

BACKGROUND

The Canadian Network for Mood and Anxiety Treatments (CANMAT) publishes clinical practice guidelines for mood and anxiety disorders. This CANMAT guideline aims to provide comprehensive clinical guidance for the pregnancy and postpartum (perinatal) management of mood, anxiety and related disorders.

METHODS

CANMAT convened a core editorial group of interdisciplinary academic clinicians and persons with lived experience (PWLE), and 3 advisory panels of PWLE and perinatal health and perinatal mental health clinicians. We searched for systematic reviews of prevention and treatment interventions for perinatal depressive, bipolar, anxiety, obsessive-compulsive and post-traumatic stress disorders (January 2013-October 2023). We prioritized evidence from reviews of randomized controlled trials (RCTs), except for the perinatal safety of medications where reviews of large high-quality observational studies were prioritized due to the absence of RCT data. Targeted searches for individual studies were conducted when systematic reviews were limited or absent. Recommendations were organized by lines of treatment based on CANMAT-defined levels of evidence quality, supplemented by editorial group consensus to balance efficacy, safety, tolerability and feasibility considerations.

RESULTS

The guideline covers 10 clinical sections in a question-and-answer format that maps onto the patient care journey: case identification; organization and delivery of care; non-pharmacological (lifestyle, psychosocial, psychological), pharmacological, neuromodulation and complementary and alternative medicine interventions; high-risk clinical situations; and mental health of the father or co-parent. Equity, diversity and inclusion considerations are provided.

CONCLUSIONS

This guideline's detailed evidence-based recommendations provide clinicians with key information to promote the delivery of effective and safe perinatal mental healthcare. It is hoped that the guideline will serve as a valuable tool for clinicians in Canada and around the world to help optimize clinical outcomes in the area of perinatal mental health.

Can Pregnancy Experience Predict Birth Experience, Postpartum Depression and Anxiety? A Prospective Descriptive Study

AIM

A positive pregnancy experience can be a good start for healthy motherhood. This study aimed to investigate Iranian women's pregnancy experience and how self-reported hassles and uplifts influence birth experience, postpartum depression and anxiety, and the association between childbirth experience and postpartum mental health.

DESIGN

A prospective descriptive study.

METHODS

A prospective descriptive study was conducted among 228 pregnant women from health centres in Tabriz, Iran. From the 28th to 36th weeks of pregnancy, participants completed the Pregnancy Experience Scale. Then, the mothers were followed up until 4-6 weeks postpartum, and Childbirth Experience Questionnaires version 2.0, Edinburgh Postnatal Depression and the short form of Specific Postpartum Anxiety Scales were completed. The data were analysed using the general linear model.

RESULTS

After adjusting for possible confounding variables, there was no statistically significant association between women's pregnancy and childbirth experiences. However, the mean scores of postpartum depression and anxiety were significantly higher in women who felt unhappy about the discomforts that they experienced during pregnancy (β [95% CI] = 0.01 [0.01-0.02]; p < 0.001, 0.22 [0.09-0.35]; p = 0.001, respectively).

CONCLUSION

There was a significant statistical reverse association between childbirth experience and postpartum anxiety and depression. The study demonstrated a significant association between women's pregnancy, birth experiences and postpartum psychological outcomes. Implementing interventions that create a positive pregnancy experience will likely have an impact on reducing the prevalence of postpartum depression and anxiety.

PATIENT OR PUBLIC CONTRIBUTION

Pregnant women participated solely in the data collection by responding to the questionnaires. No participant contributions were required for the study's design, outcome measurement or implementation.

Psychometric properties of the PSWQ in a sample of pregnant and postpartum women

BACKGROUND

Generalized anxiety disorder (GAD)-characterised by excessive and uncontrollable worry-is the most frequently diagnosed anxiety disorder during pregnancy and the postpartum period. Identification of GAD often relies on assessment of its cardinal feature, pathological worry. The Penn State Worry Questionnaire (PSWQ) is the most robust measure of pathological worry to date but has not been extensively evaluated for use during pregnancy and the postpartum period. This study evaluated the internal consistency, construct validity, and diagnostic accuracy of the PSWQ in a sample of pregnant and postpartum women with and without a principal GAD diagnosis.

METHODS

One hundred forty-two pregnant and 209 postpartum women participated in this study. Sixty-nine pregnant and 129 postpartum participants met criteria for a principal diagnosis of GAD.

RESULTS

The PSWQ demonstrated good internal consistency and converged with measures assessing similar constructs. Pregnant participants with principal GAD scored significantly higher on the PSWQ than those with no psychopathology and postpartum participants with principal GAD scored significantly higher than those with principal mood disorders, other anxiety and related disorders, and no psychopathology. A cut-off score of 55 and 61 or greater was determined for detecting probable GAD during pregnancy and the postpartum period, respectively. Screening accuracy of the PSWQ was also demonstrated.

CONCLUSIONS

This study underscores the robustness of the PSWQ as a measure of pathological worry and probable GAD and supports its use in the detection and monitoring of clinically significant worry symptoms during pregnancy and postpartum period.

Mixed-Methods Assessment of Maternal Anxiety During the First 8 Weeks After Birth

OBJECTIVE

To describe and compare the experiences of postpartum anxiety among women with generalized anxiety and postpartum-specific anxiety.

DESIGN

Prospective, longitudinal, mixed methods.

SETTING

Academic tertiary center in the mid-Atlantic United States. Study activities were remote.

PARTICIPANTS

Women at 1 to 8 weeks after birth (N = 34).

METHODS

We used mobile surveys to measure daily anxiety ratings and responses to open-ended, theory-driven questions about anxiety. We used the cutoff scores on the State-Trait Anxiety Inventory and Postpartum Specific Anxiety Scale administered 8 weeks after birth to determine the presence of generalized and postpartum-specific anxiety. Participants' responses were analyzed with qualitative description and sorted by anxiety questionnaire scores at 8 weeks after birth. We compared qualitative findings between participants with generalized anxiety and postpartum-specific anxiety.

RESULTS

Participants with generalized anxiety had high levels of overwhelm and felt ill-equipped to handle daily stressors, whereas those with postpartum-specific anxiety felt adept at coping. Participants with generalized anxiety lacked emotional and physical support, and those with postpartum-specific anxiety reported more physical but variable emotional support. Sources of daily anxiety in participants with postpartum-specific anxiety were infant-centric (e.g., infant health, end of maternity leave, breastfeeding), whereas anxiety sources for participants with generalized anxiety were varied (e.g., self-health, partner concerns). Participants with generalized anxiety versus postpartum-specific anxiety were more likely to be multiparous and have comorbid depression symptoms.

CONCLUSION

Symptoms, levels of perceived support, and sources of anxiety differed between participants with generalized versus postpartum-specific anxiety. Our findings can inform postpartum anxiety screening strategies and support interventions.

The Worry Behaviors Inventory-Perinatal Revised: Adaptation and Initial Validation for Use in Perinatal Samples

Generalized anxiety disorder (GAD) is a leading mental health concern during pregnancy and the postpartum (perinatal) period. People with GAD engage in problematic behaviors to manage their distress. However, the extent of GAD behaviors during the perinatal period may not be adequately captured by the Worry Behaviors Inventory (WBI), the most comprehensive measure of GAD behaviors to date. We evaluated the structure of the initial WBI item-pool and then evaluated the internal consistency, construct validity, and predictive utility of the Perinatal Revised WBI (WBI-PR) in a sample of 214 perinatal women with and without GAD. A two-factor, 10-item scale was supported, and some of the retained items differed from the original WBI. Internal consistency of the WBI-PR was acceptable, and evidence of construct validity was demonstrated. The WBI-PR predicted GAD diagnostic status both alone and beyond existing generalized anxiety and depression symptoms. Implications of these findings are discussed.

Postpartum experiences among individuals with suspected and confirmed prenatal generalized anxiety disorder during the COVID-19 pandemic: Implications for help-seeking

Prenatal generalized anxiety disorder (GAD) is a common and underdiagnosed condition with negative health consequences to both the pregnant individual and child. Here we studied the relationship between diagnosis and treatment status of GAD during pregnancy (no GAD diagnosis, suspected but not diagnosed, diagnosed but not treated, diagnosed and treated) during the COVID-19 pandemic and postpartum mental health outcomes, while considering the potential influence of individual psychological factors such as distress tolerance and resilience and the role of COVID-19-related health worries. In this sample of predominantly highly educated and white birthing individuals, one in five respondents experienced GAD during pregnancy and another one in six suspected GAD but was not diagnosed. Amongst those with a GAD diagnosis, 30% did not receive treatment. We found that those with a GAD diagnosis during pregnancy who did not receive treatment showed the highest levels of postpartum anxiety and depressive symptoms in the postpartum, even after controlling for covariates, and experienced the most COVID-19-related health worries. In comparison, individuals with a GAD diagnosis during pregnancy who received treatment experienced significantly lower anxiety symptom burden and depressive symptom burden, with a symptom burden similar to those without a confirmed or suspected diagnosis after controlling for individual psychological factors. We conclude that clinicians should strongly consider screening for and treating prenatal anxiety to prevent suboptimal postpartum mental health outcomes.

Descriptive Exploratory Study to Understand Postpartum Anxiety Using Multiple Measures

OBJECTIVE

To compare a general anxiety instrument plus a depression instrument with a specific postpartum anxiety instrument plus a depression instrument to detect postpartum anxiety and to explore trends in daily postpartum anxiety.

DESIGN

Prospective, longitudinal cohort study.

SETTING

Academic tertiary center in the mid-Atlantic United States. Study activities were remote.

PARTICIPANTS

Pregnant women (N = 73) in the third trimester of pregnancy.

METHODS

We administered the State-Trait Anxiety Inventory (STAI), Postpartum Specific Anxiety Scale (PSAS), and Edinburgh Postnatal Depression Scale (EPDS) at 1 and 8 weeks after birth. We used mobile ecological momentary assessment prompts to measure daily anxiety levels (0-10) from 1 to 8 weeks after birth. We defined the presence of anxiety and depression by using the established instrument cutoff scores. We used repeated-measures analysis of variance and dependent-samples t tests to determine the stability of the determined anxiety instruments during the study time frame. We used linear mixed modeling to explore mobile ecological momentary assessment anxiety trends.

RESULTS

The PSAS and EPDS detected more participants with anxiety and/or depression (26.8%, 19/71) than the STAI and EPDS (23.9%, 17/71) at 8 weeks after birth. PSAS scores increased from 1 to 8 weeks after birth (p = .003); STAI scores decreased (p = .01). Daily anxiety ratings changed nonlinearly during the study period, were greatest at 2 weeks, declined and stabilized, and then trended upward toward Week 8.

CONCLUSION

Detection of postpartum anxiety in clinical settings can be improved through addition of the PSAS in routine screening. Timing of anxiety assessment should be considered between 6 to 8 weeks after birth.

Problematic behaviours associated with generalized anxiety disorder during pregnancy and the postpartum period: A thematic analysis

Generalized anxiety disorder (GAD) is one of the most common anxiety disorders in pregnancy and the postpartum (perinatal) period. Perinatal women with GAD engage in problematic behaviours, yet the focus and function of these behaviours remain unknown.

OBJECTIVE

Given that worry during the perinatal period is largely maternally focused, the objective of this study was to explore the accompanying behavioural features of GAD during pregnancy and the postpartum period.

DESIGN

A qualitative study was conducted.

METHODS

Twenty-five pregnant (n = 10) and postpartum (n = 15) women were recruited through clinical referrals and the Hamilton community. Following the completion of a semistructured diagnostic interview and symptom measures, participants participated in one of seven focus groups to learn about behaviours utilized in response to their worries. A thematic analysis was conducted to identify behaviour themes and subthemes in pregnant and postpartum women.

RESULTS

Five behaviour themes and 12 subthemes were identified. Specifically, participants endorsed engaging in excessive reassurance seeking, checking and repeating, overcontrol, overpreparation and avoidance behaviours.

CONCLUSIONS

Our results confirm that perinatal women with GAD engage in comparable problematic behaviours to those with GAD in the general population, yet the presentation, frequency and focus of those behaviours differ. These findings have implications for theoretical formulations of GAD, and the clinical management of this disorder during the perinatal period.

Repetitive negative thinking in the perinatal period and its relationship with anxiety and depression

BACKGROUND

Rumination and worry represent two types of repetitive negative thinking (RNT), and their predictive and maintaining roles are well-established in depression and anxiety, respectively. Furthermore, there is an emerging literature on the link between RNT and psychological wellbeing in the perinatal period.

METHODS

We conducted a scoping review of studies that have investigated the relationship between RNT and perinatal depression and anxiety. We identified 87 papers eligible for inclusion in the review; they included cross-sectional and longitudinal studies, as well as treatment evaluations (pilot trials and randomised controlled trials).

RESULTS

Cross-sectional studies provided evidence of an association between RNT (i.e., rumination and worry) and depression and anxiety, in both pregnancy and postpartum. Longitudinal findings were mixed. Whilst antenatal worry consistently predicted subsequent depression and anxiety (both later in pregnancy and postpartum), rumination did not consistently predict depression. However, there was some evidence that rumination interacted with other processes to predict later psychopathology. Three randomised controlled trials evaluated whether psychological treatments reduce RNT in the perinatal period, only one of which included a clinical sample.

LIMITATIONS

No experimental investigations were eligible for inclusion in the review.

CONCLUSIONS

Further studies are needed to further our understanding of the nature and role of RNT in pregnancy and postpartum, and its consequences for maternal mental health. These include (but are not limited to) experimental investigations, studies with large clinical samples, and RCTs evaluating the effectiveness of psychological interventions targeting RNT to prevent and treat perinatal depression and anxiety.

Screening for Perinatal Anxiety Using the Childbirth Fear Questionnaire: A New Measure of Fear of Childbirth

Fear of childbirth affects as many as 20% of pregnant people, and has been associated with pregnancy termination, prolonged labour, increased risk of emergency and elective caesarean delivery, poor maternal mental health, and poor maternal-infant bonding. Currently available measures of fear of childbirth fail to fully capture pregnant people’s childbirth-related fears. The purpose of this research was to develop a new measure of fear of childbirth (the Childbirth Fear Questionnaire; CFQ) that would address the limitations of existing measures. The CFQ’s psychometric properties were evaluated through two studies. Participants for Study 1 were 643 pregnant people residing in Canada, the United States, and the United Kingdom, with a mean age of 29.0 (SD = 5.1) years, and 881 pregnant people residing in Canada, with a mean age of 32.9 (SD = 4.3) years for Study 2. In both studies, participants completed a set of questionnaires, including the CFQ, via an online survey. Exploratory factor analysis in Study 1 resulted in a 40-item, 9-factor scale, which was well supported in Study 2. Both studies provided evidence of high internal consistency and convergent and discriminant validity. Study 1 also provided evidence that the CFQ detects group differences between pregnant people across mode of delivery preference and parity. Study 2 added to findings from Study 1 by providing evidence for the dimensional structure of the construct of fear of childbirth, and measurement invariance across parity groups (i.e., the measurement model of the CFQ was generalizable across parity groups). Estimates of the psychometric properties of the CFQ across the two studies provided evidence that the CFQ is psychometrically sound, and currently the most comprehensive measure of fear of childbirth available. The CFQ covers a broad range of domains of fear of childbirth and can serve to identify specific fear domains to be targeted in treatment.

Evaluation of an Augmented Cognitive Behavioural Group Therapy for Perinatal Generalized Anxiety Disorder (GAD) during the COVID-19 Pandemic

The perinatal period is considered a window of vulnerability given the increased risk of psychiatric difficulties during this time, such as mood and anxiety disorders (ADs). Pre-pandemic rates of ADs in perinatal women were one in five but have since increased with the onset of the COVID-19 pandemic (COVID). In addition, recent research suggests that the focus of worry has shifted during the pandemic, with perinatal women reporting significantly more COVID-specific worries. The objective of this study was to augment our current evidence-based Cognitive Behavioural Group Therapy (CBGT) for perinatal anxiety protocol by targeting intolerance of uncertainty and tailoring existing strategies to address COVID-related worry and impact. Pregnant (n = 19) and postpartum (n = 49) women were recruited from regular clinic patient flow from a university-affiliated teaching hospital between September 2020 and March 2021. Improvements in generalized anxiety symptoms, worry, intolerance of uncertainty, and mood were observed at post-treatment, maintained at 3-months, and the intervention received high ratings of treatment satisfaction. This is the first study to examine an augmented CBGT for perinatal women with GAD during the pandemic and supports the inclusion of strategies that target intolerance of uncertainty as well as specific pandemic and perinatal worry content for effective outcomes.

Characterizing Worry Content and Impact in Pregnant and Postpartum Women with Anxiety Disorders During COVID-19

The novel COVID pandemic has had a substantial impact on global mental health, including those populations that are inherently vulnerable such as pregnant and postpartum (perinatal) women. Anxiety disorders (ADs) are the most common mental health disorders during the perinatal period, affecting up to 1 in 5 women. However, since the onset of the pandemic, up to 60% of perinatal women are experiencing moderate to severe levels of anxiety. Given the substantial increase in perinatal anxiety during COVID, we sought to better understand its phenomenology by characterizing the collective worry content and impact of COVID using a content analysis. Eighty-four treatment-seeking pregnant (n = 35) and postpartum (n = 49) women with a principal AD, participated in this study between April and October 2020. In addition to completing questionnaire measures and a semi-structured diagnostic interview, participants were asked to 1) describe their top excessive and uncontrollable worries; 2) describe additional COVID and non-COVID worries; and 3) describe how the pandemic had affected their lives. All responses were given verbally and transcribed verbatim by assessors. A content analysis led to the emergence of various COVID and non-COVID worry and impact themes. One third of participant's principal worries were specific to COVID, and 40% of COVID worries were specific to the perinatal context. Understanding the worry content and impact of COVID may improve symptom detection and inform the development of targeted treatment strategies to support the mental health needs of perinatal women with ADs throughout the pandemic and thereafter. Understanding pandemic-specific worries is important for perinatal symptom screening and may allow for the development of targeted treatment strategies to address COVID-specific worries and impact.

Cognitive Behavior Therapy for Women With Generalized Anxiety Disorder in the Perinatal Period: Impact on Problematic Behaviors

Generalized anxiety disorder (GAD) is the most frequently diagnosed anxiety disorder among women in the perinatal period (pregnancy to one year postpartum). Recent studies have examined the relationship between problematic behaviors and GAD symptoms. Studies in nonperinatal samples indicate that adults with GAD engage in avoidance and safety behaviors and these behaviors are associated with greater symptom severity. Little research has examined the use of problematic behaviors among pregnant or postpartum women. However, preliminary research suggests that these behaviors may have a negative impact on both anxious women and their children. Our aim was to examine the extent to which women with GAD in pregnancy or the postpartum engage in problematic behaviors and whether cognitive behavioral therapy is effective in reducing these behaviors. Fifty-eight women with GAD in pregnancy or postpartum were recruited from a larger clinical trial (Clinicaltrials.gov ID NCT02850523) evaluating the effectiveness of group-based cognitive behavioral therapy (CBGT) for perinatal anxiety disorders. The results indicated that women with perinatal GAD reported high levels of avoidance and safety behaviors and greater engagement in these behaviors was associated with higher levels of worry and related symptoms. CBGT was effective in reducing GAD symptoms and problematic behaviors and a bidirectional relationship was found between changes in worry and problematic behaviors during treatment. Limitations and future directions are discussed.

Coping with stress and personality: A study in pregnancies complicated by hypertension

OBJECTIVE

The objective of this work is to investigate the role of personality in pregnancies complicated by hypertension, thru analysis of structure and associations between negative affect and coping strategies, and their role towards psychological distress.

METHOD

A cross-sectional study with 343 women, where 192 pregnancies complicated by hypertension, was carried out by employing the following tools: the five-factor model (Big Five), Depression, Anxiety and Stress Scale (DASS-21), and Jalowiec's Coping Inventory. Two complementary strategies were carried out: an exploratory approach on the interactions between latent variables and a confirmatory technique.

RESULTS

Coping strategies seem to be dissociated in the hypertensive group, and these participants tend to use strategies according to their personality, mostly emotion focused, extraversion, and neuroticism. The extraversion model exclusively shows an acceptable goodness-of-fit after a structural equation modelling. A multigroup analysis reached a full metric invariance level for extraversion.

CONCLUSIONS

These results are of interest for both clinical and research settings. Prenatal screening and associated interventions may reduce perinatal negative affective states and related pregnancy complications.

Mothers' Worries During Pregnancy: A Content Analysis of Reddit Posts

Qualitative investigations into maternal worries during pregnancy are limited. The aim of this study was to identify the content of women's pregnancy-related worries by completing a content analysis of posts on Reddit. A total of 217 posts by 196 unique users were analyzed. Most worries related to infant factors (32.6%), individual factors (27.1%), and antenatal care factors, such as medical procedures (25.2%). The remaining worries related to situational factors (10.9%) and the partner relationship (4.3%). Although most fears related to fetal well-being, other concerns included problems with family members, women's own mental health, and not being a "good mother." These findings support calls for antenatal education to more adequately address women's psychosocial concerns.

Content and Themes of Repetitive Thinking in Postnatal First-Time Mothers

Repetitive thinking (RT) predicts and maintains depression and anxiety, yet the role of RT in the perinatal context has been under-researched. Further, the content and themes that emerge during RT in the perinatal period have been minimally investigated. We recruited an online community sample of women who had their first baby within the past 12 months (n = 236). Participants completed a battery of self-report questionnaires which included four open-ended questions about the content of their RT. Responses to the latter were analyzed using an inductive thematic analysis approach. Participants reported RT about a range of unexpected emotional responses to becoming a new mother, impact on their sleep and cognitive functioning, as well as the impact on their identity, sense of self, lifestyle, achievements, and ability to function. RT was commonly experienced in first-time mothers, and the themes that emerged conveyed an overall sense of discrepancy between expectations and reality, as well as adjustment to profound change. By providing insight into the content of RT in new mothers, the findings of our study have scope to inform the content of interventions that seek to prevent and treat postnatal mental health problems, particularly those which target key psychological processes such as RT.

"Crippling and unfamiliar": Analysing the concept of perinatal anxiety; definition, recognition and implications for psychological care provision for women during pregnancy and early motherhood

AIM

To clarify how perinatal anxiety is characterised within the current evidence base and discuss how a clearer definition and understanding of this condition may contribute to improving care provision by midwives and other healthcare professionals.

BACKGROUND

Perinatal anxiety is common, occurs more frequently than depression and carries significant morbidity for mother and infant. The concept of perinatal anxiety is ill-defined; this can pose a barrier to understanding, identification and appropriate treatment of the condition.

DESIGN

Concept Analysis paper.

METHOD

Rodgers' Evolutionary Model of Concept Analysis, with review based on PRISMA principles (see Supplementary File-1).

FINDINGS

While somatic presentation of perinatal anxiety shares characteristics with general anxiety, anxiety is a unique condition within the context of the perinatal period. The precursors to perinatal anxiety are grounded in biopsychosocial factors and the sequelae can be significant for mother, foetus, newborn and older child. Due to the unique nature of perinatal anxiety, questions arise about presentation and diagnosis within the context of adjustment to motherhood, whether services meet women's needs and how midwives and other health professionals contribute to this. Most current evidence explores screening tools with little examination of the lived experience of perinatal anxiety.

CONCLUSION

Examination of the lived experience of perinatal anxiety is needed to address the gap in evidence and further understand this condition. Service provision should account for the unique nature of the perinatal period and be adapted to meet women's psychological needs at this time, even in cases of mild or moderate distress.

Developmental Dimensions in Preterm Infants During the 1st Year of Life: The Influence of Severity of Prematurity and Maternal Generalized Anxiety

BACKGROUND

The literature has recognized premature birth as a risk factor for infant development and maternal anxiety. This study investigated the impact of the severity of birth weight, as well as of maternal anxiety at 3 months of infants' corrected age, on infants' outcomes during the 1st year postpartum. Moreover, it described the longitudinal trajectories of developmental outcomes, additionally exploring the impact of anxiety.

METHODS

The study compared 147 mothers and their 147 newborns, differentiated in 25 Extremely Low Birth Weight (ELBW), 41 Very Low Birth Weight (VLBW), and 81 Full-Term (FT) infants. At 3, 9, and 12 months (corrected age in the case of preterm infants) the level of infants' development was investigated according to the 5 quotients (Locomotor, Personal and Social, Hearing and Language, Eye-hand Co-ordination and Performance) of the Griffiths Mental Development Scales (GMDS-R). During the assessment of 3 months, mothers fulfilled Penn State Worry Questionnaire (PSWQ) to evaluate the presence of generalized anxiety.

RESULTS

Among the 5 GMDS-R quotients, significant effect of severity of birth weight emerged only for Performance quotient: preterm infants (ELBW at 3 months; VLBW at 12 months) showed lower scores than FT ones. Moreover, this quotient decreased from 3 to 9 and to 12 months for VLBW and FT infants, while it was stable for ELBW ones. A significant interaction between severity of birth weight and maternal anxiety emerged for Hearing and Language and Locomotor quotients. In the first case, scores for ELBW infants, independently from maternal anxiety, decreased from 9 to 12 months. The same results emerged for VLBW infants, in the case of non-anxious mothers. Regarding Locomotor quotient, mean scores decreased from 3 to 9 and to 12 months for all groups in the case of non-anxious mothers. Conversely, when mothers were anxious, this decrease emerged only for VLBW infants. Lastly, ELBW, VLBW and FT showed difference in the growth and slope of the trajectories of different quotients.

CONCLUSION

The severity of birth weight for preterm infants, also in interaction with maternal anxiety, had significant and specific impact on different dimensions of infants' development. Clinical implications of these results underline the need for individualized interventions.