Early parental interactions with and perceptions of multiple birth infants

Adolescent attachment to parents and peers in singletons and twins born with assisted and natural conception

STUDY QUESTION

Does adolescent attachment to parents and peers differ between singletons and twins born with ART or natural conception (NC)?

SUMMARY ANSWER

Adolescent attachment anxiety with the father was higher among NC singletons than among ART and NC twins, whereas attachment avoidance with the father was higher in ART singletons than in NC singletons and NC twins. No differences were found in attachment to the mother, best friend or romantic partner.

WHAT IS KNOWN ALREADY

Most studies have not found differences between ART and NC singletons in parent–adolescent relationships, but twin relationships may be more at risk. No previous study has examined all four groups in the same study, or specifically looked at attachment relationships.

STUDY DESIGN, SIZE, DURATION

This was an 18-year, prospective and controlled longitudinal study with families of 496 ART singletons, 101 ART twin pairs, 476 NC singletons and 22 NC twin pairs. Families were recruited during the second trimester of pregnancy; the ART group was recruited from five infertility clinics in Finland and the control group was recruited from a hospital outpatient clinic during a routine visit.

PARTICIPANTS/MATERIALS, SETTING, METHODS

Mothers and fathers gave background information for this study during pregnancy, and during the child’s first year and early school age (7–8 years). For the ART group, infertility characteristics and prenatal medical information was also obtained from the patient registry of the infertility clinics. Children (originally 50% girls) filled in electronic questionnaires related to their attachment to mother, father, best friend and romantic partner (Experiences in Close Relationships—Relationship Structures) at 17–19 years of age.

MAIN RESULTS AND THE ROLE OF CHANCE

Adolescent attachment anxiety to father was higher in NC singletons than in ART twins, P = 0.004 and marginally higher than in NC twins, P = 0.06. Adolescent attachment avoidance to father was higher in ART singletons than in NC singletons, P = 0.006 and marginally higher than in NC twins, P = 0.055.

LIMITATIONS, REASONS FOR CAUTION

The sample size was small especially in the NC twin group and there was drop-out over the 18-year time period, especially among boys and families with lower parental education level. The study only included native Finnish-speaking families. The results could differ in a more diverse population. ART singletons were younger and had fewer siblings than ART twins and NC children, and ART and NC twins had more newborn health risks than ART and NC singletons.

WIDER IMPLICATIONS OF THE FINDINGS

The study adds to a growing body of evidence that neither ART treatments nor being a twin places mother–child relationships or peer relationships at long-term risk. However, in our study, which was the first to examine both ART and twinhood simultaneously, we found that there may be more problems in father–adolescent relationships, but only in ART singletons and only related to attachment avoidance. Our findings suggest that men, as well as women, should receive enough support in pre- and peri-natal health care during and after infertility treatments.

STUDY FUNDING/COMPETING INTEREST(S)

This study was funded by Academy of Finland (grant number 2501308988), the Juho Vainio Foundation and the Finnish Cultural Foundation. The authors report no conflict of interest.

TRIAL REGISTRATION NUMBER

N/A.

Monochorionic Twins and the Early Mother-Infant Relationship: An Exploratory Observational Study of Mother-Infant Interaction in the Post-Partum Period

The extraordinary increase in twin rates and specifically monochorionic twin pregnancies represents a major public health issue due to the associated increased risks for the mother, the child and their relationship. The aim of the present study was to examine the quality of mothers' behaviour during mother-infant interaction in the early postpartum period by comparing mothers of twins and mothers of singletons during face-to-face interaction with their infants. Demographic and clinical information was collected by trained research psychologists from the mothers' and the childrens' clinical records and from interviews with the mothers. At three months (corrected for prematurity), the interactions of the dyads (11 mother-twin infant dyads and 11 mother-singleton dyads) were filmed at participants' homes in accordance with the procedure of the Global Rating Scales. Maternal behaviour during interactions was assessed and rated by two trained research psychologists. With regard to the mothers' interaction with each twin, no differences were found between mothers' scores in every GRS subscale, indicating that mothers did not interact differently with their twins. Comparisons between mothers of MC twins and mothers of singletons showed that the quality of maternal sensitive behaviour during the interactions were lower in mothers of twins (0.35) Mothers of twins were also more distant during interactions with their babies and more likely to experience depression symptoms than mothers of singletons (0.05). Future research should examine mother-infant relationships following twin birth with larger samples. Such research will be especially useful in evaluating the potential benefits of interventions to promote positive mother-infant interactions.

Sleep pattern gender differences and fragmentation in postpartum parents of twins

OBJECTIVE

Parents of newborn twins are at risk for both shortened sleep duration and sleep discontinuity. The purpose of this study was to characterize weekday and weekend sleep duration, sleep continuity, and awakenings in both mothers and fathers of newborn twins during the first 3 months at home.

MATERIAL AND METHODS

Sleep-wake parameters were assessed at two time points using self-report diaries and actigraphy in 75 families with newborn twins. To assess sleep on weekdays and weekends with minimal subject burden, actigraphy recordings of both parents commenced at 9:00 p.m. Saturday and terminated at 9:00 p.m. Tuesday.

RESULTS

Mean sleep duration over 24 hours for parents of twins ranged between 6.7 and 7.5 hours during the first 3 months postpartum and did not significantly differ on weekdays or weekends for mothers. Weekend sleep was more fragmented for fathers at both one month and three months with more awakenings, compared to weekday sleep. Mothers had more fragmented night sleep compared to fathers at one month. In contrast, at three months postpartum fathers had shorter total sleep time and night sleep time, but fewer night awakenings on weekdays than mothers. No differences were observed in weekend sleep duration or sleep patterns between mothers and fathers at three months.

DISCUSSION

Consolidated sleep periods for both parents averages three hours or less during the first three months postpartum and sleep for both parents is fragmented. In families with newborn twins, the extent of sleep disruption for mothers and fathers is similar.

Early styles of interaction in mother-twin infant dyads and maternal mental health

Transition to parenthood is considered a critical process for mothers of twins. There are, however, few studies on the subject. This study aims to evaluate the differences between mother-twin infant dyads and mother-singleton infant dyads with regard to maternal depression, anxiety, parenting stress, and the quality of mother-infant interaction. Mothers of twin infants (N = 40) were compared to mothers of singletons (N = 72). At infant 3 months, maternal depression, anxiety, and parenting stress were assessed via a questionnaire and styles of interaction with the Care-Index. The results indicated that mothers of twins (vs mothers of singletons) had significantly higher state anxiety and higher scores on the Difficult Child Scale of the Parenting Stress Index at infant 3 months. No significant differences between the two groups were found with regard to maternal depression. Mothers of twins had significantly lower sensitivity and were more unresponsive than mothers of singletons. Twin infants had significantly more difficult and compliant behaviours than singleton infants. Assisted reproductive treatment (ART) and prematurity had no effect on any of the examined variables. State anxiety was shown to partially mediate the relationship between twin parenthood and maternal sensitivity and to completely mediate the relationship between twin parenthood and infant difficult style. Maternal unresponsiveness was shown to be exclusively linked to being the parent of twins. The study shows that twin parenthood has a significant effect on maternal mental health and on the quality of mother-infant interaction and highlights the importance of early prevention programmes for twin parents.

Is there something special about twin families? A comparison of parenting styles in twin and non-twin families

Twin comparisons offer a powerful quasi-experimental design to study the impact of the family of origin on children's life chances. Yet, there are concerns about the generalizability of results obtained from twin studies because twin families are structurally different and twins have a genetic resemblance. We examine these concerns by comparing mothers' reports on their parenting styles for twin and non-twin children between twin and non-twin families, as well as within twin families. We use two German studies for our comparisons: TwinLife and pairfam. Our results demonstrate that twins receive more differential treatment and more emotional warmth than non-twins; however, these differences are largely accounted for by age differences between children. Overall, our results indicate that results on parenting obtained from twin studies can be generalized to non-twin families.

Postpartum Mental Health Care for Mothers of Multiples: A Qualitative Study of New Mothers' Treatment Preferences

OBJECTIVES

Despite the expanding literature on empirically supported strategies for treating perinatal mental health concerns in new mothers, no published reports have examined tailored support interventions for parents of twins or higher-order multiples. The goal of this study was to improve our understanding of the unique postpartum experiences of new mothers of multiples, gauge interest in both traditional and e-health approaches to mental health care, and discuss aspects of mental health treatment viewed to be most helpful.

METHODS

Twenty-eight women who had given birth to their first set of multiples within the past year were recruited online. Participants completed self-report measures of depression, anxiety, and sleep disruption and took part in telephone focus groups.

RESULTS

On average, participants had elevated depression and anxiety symptoms and notably disrupted sleep. Although some positive elements of the postpartum period were noted, most participants described this time as stressful, overwhelming, and exhausting. They identified experiences that were unexpected or unique to parenting multiples and indicated numerous desired aspects of mental health treatment. Interest in internet-delivered care was especially high.

CONCLUSIONS

This study lays the groundwork for the development of a targeted psychosocial intervention to address mental health concerns among new mothers of multiples, particularly those who are already engaged and seeking support and community online. This report also suggests myriad ways in which providers can best address the needs of this population (eg, utilize providers with expertise in multiples, deliver care in the home, use e-health approaches, and normalize unique stressors and negative moods).

'Our relationship is different': exploring mothers' early experiences of bonding to their twins

Objective: The aim of this research was to explore mothers' lived experience of early bonding with their twins.Background: Research has suggested that the process of bonding with twins may differ from that of bonding with singletons. However, there is limited research exploring this experience from the mother's perspective.Method: An IPA study involved six participants in semi-structured interviews.Results: Two superordinate themes emerged; 'Twin guilt and shame' and 'I missed out … they miss out'. Results suggested the experience of bonding with two infants simultaneously generated guilt for the mothers, who at points felt that they and their infants had missed out and had had to adapt.Conclusion: The experience of bonding with twins can be complex and take longer than anticipated, with mothers reporting the experience as being different from their expectations. Having a greater understanding and information about the complexities of bonding with twins would be beneficial for both mothers and professionals working with them.

Twins' and Singletons' Linguistic Environment: A Systematic Review

Background: Among twins, lower linguistic skills emerged when compared with singletons. Considering the association found between parental linguistic input and children's language development, exploring the differences between twins and singletons' linguistic environments could find variables that are potentially associated with the lower linguistic skills of twins.

Aim: The current systematic review aims to analyze and systematize the existing literature focused on the comparison of twins' and singletons' linguistic environments within their first 3 years of life. Methodological issues (i.e., the procedure used to assess the linguistic environment, the coding of the linguistic environment's features, the computational method employed to assess the parental linguistic input, and participant characteristics) and differences found among twins and singletons regarding their linguistic environment (i.e., linguistic input quantity, linguistic input complexity, linguistic features of child-directed speech, parental responsiveness, and directiveness, joint attention, and book reading) were highlighted.

Method: The Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) statement was followed. Eligible studies were searched through EBSCO, PubMed, and Web of Science. From this search, 1,347 study results emerged, and 8 studies were included.

Results: To our knowledge, this is the first systematic review focused on the comparison of twins' and singletons' linguistic environments. Differences between the groups were found in all of the included studies. Data against twins were generally identified regarding all the considered linguistic environment's features. However, conflicting results within and between the included studies emerged, mainly according to the computational method employed (i.e., twin moms value, twin direct dyadic value, twin direct dyadic + both value, and input directed toward both children simultaneously).

Conclusion: The disadvantaged linguistic environment of twins is likely due to limited parental resources and demands associated with the management of two children of the same age. However, the limited and conflicting data found did not allow for a firm conclusion to be drawn on the differences in the twins' and singletons' linguistic environments. Further studies on the topic are needed.

Observed Mother- and Father-Child Interaction Differences in Families with Medically Assisted Reproduction-Conceived Twins and Singletons

Increased medically assisted reproduction (MAR) use to treat infertility has resulted in a growing twin birth rate. Little is known about parent-child relationships for twin relative to singleton children in middle childhood. This study fills this gap by examining parent-child relationships in 57 families with eighty 6- to 12-year-old MAR twin and singleton children using observational data (warm and supportive communication, control, and hostility). Nested ANCOVAs indicate that while mothers exhibit similar interactional behaviors toward twins and singletons, fathers have less optimum behaviors toward twins relative to singletons. Twins displayed less engaged behavior with mothers and fathers relative to singletons. Given the vitality of parent-child relationships for family and child adjustment, future studies should examine determinants and outcomes of twin-singleton relationship differences to bolster twins' and their families' functioning.

Maternal Psychological Distress and Mother-Infant Relationship: Multiple-Birth Versus Singleton Preterm Infants

PURPOSE

Multiple preterm birth is associated with more maternal psychological distress and less positive mother-infant interactions than singleton preterm birth. This study's purpose was to compare psychological distress and the relationship with their infants in mothers of multiples and mothers of singletons.

DESIGN

An exploratory secondary analysis of longitudinal data.

SAMPLE

236 mothers and their preterm infants.

MAIN OUTCOME VARIABLES

Maternal psychological distress (depressive symptoms, anxiety, posttraumatic stress [PTS], parenting stress), the mother-infant relationship (worry; child vulnerability; maternal positive involvement and developmental stimulation; and child developmental maturity, irritability, and social behaviors), and the home environment.

RESULTS

Mothers of multiples had greater PTS symptoms at baseline, anxiety at discharge, and depressive symptoms at six months than mothers of singletons. Mothers of multiples also had more positive home environments at six months. Multiple birth was a risk factor for psychological distress but not for less positive mother-infant interactions.

Multiple Gestation: Side Effects of Antepartum Bed Rest

The birth rate for higher order multiples has dramatically increased in recent decades. Multiple gestation pregnancies are considered to be at high obstetric risk. Antepartum bed rest is often prescribed to offset complications despite the lack of evidence for its effectiveness in preventing complications. This longitudinal repeated-measures study identified side effects of antepartum bed rest treatment for 31 hospitalized women with twin or triplet gestation. Maternal weight gain and infant birth weight were recorded. Antepartum stressors were measured by the Antepartum Stressors Hospital Inventory, and depressive symptoms were measured by the Center for Epidemiologic Studies Depression Scale (CES-D). Antepartum and post-partum side effects of bed rest were also assessed by the Antepartum and Postpartum Symptom Checklists. The weekly rate of maternal weight gain during hospitalization was significantly less than recent recommendations for multiple gestation weight gain (t =– 2.14,p = .04). Infant birth weights were appropriate for gestational age. There were fewer than expected small-for-gestational-age infants. Concerns regarding family status and separation from family were the major antepartum stressors. Women reported a high number of symptoms during bed rest (M= 22), which did not significantly change across 2 weeks. CES-D scores for depressive symptoms were high on antepartum hospital admission. Postpartum symptoms were initially high but had significantly declined by 6 weeks: F(1, 27)= 15.68, p = .00. These findings suggest that interventions are needed to reduce antepartum maternal weight loss, stress, physiologic and psychosocial symptoms, and depressive symptoms, as well as reduce postpartum symptoms of maternal morbidity.

Comparison of the complementary feeding practices between mothers with twins and mothers with singletons

INTRODUCTION

Several studies have been done on infant feeding practices but few have focused on twins. The aim of this study was to compare the complementary feeding practices between mothers with twins and mothers with singletons.

METHODS

Mother-infant pairs (50 mother-twin pairs and 50 mother-singleton pairs) with children aged 6 to 23 months were recruited from two public health clinics and communities in Tema and Ashaiman. Information was collected on the background characteristics of the mothers. Recumbent length and weight of the children were measured. Dietary information on the infants was collected using 24 hour recall. The differences between two groups were tested using independent t-student test for continuous variables and chi-square test for categorical variables.

RESULTS

The minimum dietary diversity (4+ food groups) was met by only 32% of the twins and 40% of the singletons, and 28% of the twins and 38% of the singletons met the requirement for minimum acceptable diet (minimum dietary diversity and the minimum meal frequency). Minimum meal frequency was met by 78% of the twins and 76% of the singletons. There were no significant differences between the two groups of infants. Prevalence of undernutrition was not significantly different among the two groups (twins versus singletons: underweight-26% versus 24%, stunting-20% versus 24% and wasting-14% versus 10%.

CONCLUSION

Complementary feeding practices were suboptimal in both groups of mothers requiring interventions to improve infant feeding practices.

Relationship of Maternal Psychological Distress Classes to Later Mother-Infant Interaction, Home Environment, and Infant Development in Preterm Infants

Latent class analyses can be used early in the postpartum period to identify mothers of preterm infants experiencing similar patterns of psychological distress symptoms, but whether these classes of mothers also differ in parental responses to their infants or in their infants' development is largely unknown. In this longitudinal multisite-repeated measures study, we evaluated the usefulness of three psychological distress classes (low distress, high depressive and anxiety symptoms, and extreme distress) in predicting mother-infant interactions, quality of home environment, and infant development in 229 mother-preterm infant pairs. Mothers completed psychological distress questionnaires at study entry; parent-infant interaction was recorded at 2 and 6 months of age corrected for prematurity; and infant developmental data were collected 12 months corrected age. Mothers in the extreme distress class engaged in more developmental stimulation at 2 months (β = .99, p < 0.01) and at 6 months (β = 1.38, p < .01) than mothers in the other classes and had better quality of home environment at 2 months (β = 2.52, p = .03). When not controlling for neurological insult, infants of mothers in the extreme distress class had poorer cognitive (β = -10.28, p = .01) and motor (β = -15.12, p < .01) development scores at 12 months corrected age than infants of mothers in the other distress classes, but after controlling for infant neurological insult, there were no differences in cognitive, motor, and language development based on maternal psychological distress class. © 2016 Wiley Periodicals, Inc.

Raising multiples: mental health of mothers and fathers in early parenthood

The rate of twin and higher-order gestation births has risen dramatically in recent decades in the United States as well as other Western countries. Although the obstetrical and neonatal risks of multiple gestation pregnancies are well-documented, much less is known regarding the mental health impact on parents of multiples during the perinatal and early parenthood period. Given that parents of multiples face greater functional demands, as well as other pressures (financial, medical) this population may be at risk for heightened distress. We conducted a systematic review of quantitative, English language studies that assessed mental health outcomes of parents of multiples during pregnancy, in the first postpartum year, and in the period of early parenthood, including depression, anxiety, stress, and related constructs. Twenty-seven articles published between 1989 and 2014 met selection criteria and were included in the review. Studies utilized a wide range of methods and outcome constructs, often making comparisons difficult. Although some studies found no differences, most investigations that compared mental health outcomes in parents of multiples versus parents of singletons found that parents of multiples experience heightened symptoms of depression, anxiety, and parenting stress. We discuss gaps in the existing body of literature on parental mental health related to multiple gestation birth and conclude by discussing the need for novel intervention strategies to meet the needs of this growing population. Parents of multiples may experience worse mental health outcomes than parents of singletons. More research is needed, and future work should explore potential treatment and support options.

Twins conceived using assisted reproduction: parent mental health, family relationships and child adjustment at middle childhood

STUDY QUESTION

Compared with singletons, what is the parent mental health, parent-child and couple relationship satisfaction, and child adjustment of 6- to 12-year-old assisted reproduction technology (ART) twins and their families?

SUMMARY ANSWER

There are no differences between 6- and 12-year-old ART twin and singleton families in parent mental health or family relationships; however, twins had significantly fewer behavior and attention problems than singletons in middle childhood.

WHAT IS KNOWN ALREADY

When ART twins are younger than 5 years old, parents have more mental health difficulties and poorer parent-child relationship quality, and no differences have been found in ART twin and singletons' psychosocial adjustment. However, studies have only examined the implications of ART twin status in families with infant and toddler aged children.

STUDY DESIGN, SIZE, DURATION

A cross-sectional study of 300 6-12-year-old ART children (n = 124 twins and n = 176 singletons) from 206 families at a reproductive endocrinology clinic in the USA.

PARTICIPANTS/MATERIALS, SETTING, METHODS

Patients from one clinic with a child born between 1998 and 2004 were invited to participate in an online survey (82% recruitment rate). Participants provided information on each 6- to 12-year-old ART child in the family, and responded to questions on parent mental health, family relationships and child adjustment.

MAIN RESULTS AND THE ROLE OF CHANCE

There were no differences in parent mental health or family relationships in families with 6- to 12-year-old ART twins versus singletons. However, twins (M = 2.40, SE = 0.35) had significantly fewer behavior problems than singletons (M = 3.47, SE = 0.36; F(1, 201) = 4.54, b = 1.08, P < 0.05). Twins (M = 1.86, SD = 0.23) also had fewer attention problems than singletons (M = 2.64, SD = 0.23; F(1, 156) = 5.75, b = 0.78, P < 0.05). Results also suggest that full-term twins had significantly fewer attention problems (M = 1.37, SE = 0.33; F(1, 222) = 2.65, P = 0.05) than premature twins (M = 2.32, SE = 0.32, b = 0.95, P < 0.05), full-term singletons (M = 2.25, SE = 0.21, b = 0.88, P < 0.05) and premature singletons (M = 2.84, SE = 0.49, b = 1.47, P = 0.01). There were no significant differences between the other groups.

LIMITATIONS, REASONS FOR CAUTION

Although the response rate is high (82%) and family demographics are representative of US ART patients, patients are from one US clinic. Responses also are from one family member and may be subject to social desirability biases. Additionally, our data did not include identification of monozygotic and dizygotic twins.

WIDER IMPLICATIONS OF THE FINDINGS

Studies on infant and toddler ART twins suggest these families have parents with more mental health difficulties and lower parent-child relationship quality than singleton families. This study indicates the negative effects of twin status may have ameliorated by middle childhood, and twins may even have more optimum psychosocial adjustment than singletons in this developmental period.

STUDY FUNDING/COMPETING INTERESTS

This research is based on a collaborative research effort supported by University of Minnesota Agriculture Experiment Station Project Number MN-52-107, a University of Minnesota Grant-in-Aid of Research, Artistry and Scholarship grant, a University of Minnesota College of Education and Human Development Research Development Investment Grant and the M. Janice Hogan Fellowship. The authors of this article have no commercial or corporate interests to declare.

Twin parenthood: the midwife's role--a randomised controlled trial

OBJECTIVE

To determine whether a midwife-led intervention improved preparation for twin parenting and maternal psychosocial outcome.

DESIGN

Randomised controlled trial.

SETTING

Two maternity units in North East England.

POPULATION

A cohort of 162 women with uncomplicated twin pregnancy.

METHODS

Self-completion questionnaire at multiple time points.

MAIN OUTCOME MEASURES

The primary outcome was probable postnatal depression (measured with the Edinburgh Postnatal Depression Scale, EPDS) 26 weeks after delivery. Secondary outcomes included preparation for parenting, maternal anxiety, parenting stress, and maternal wellbeing.

RESULTS

The mean maternal EPDS scores at 26 weeks after delivery were 5.4 (SD 4.5) in the twin intervention (TI) group and 6.9 (SD 5.5) in the twin control (TC) group, and the mean difference between the groups was 1.5 (95% confidence interval, 95% CI, -0.2 to 3.3). The relative risk (RR) of having probable depression in the TI group compared with the TC group at 26 weeks was 0.48 (95% CI 0.19-1.20) for mothers and 0.84 (95% CI 0.42-1.70) for fathers. There were no statistically significant differences in maternal anxiety or parenting stress. TI mothers reported increased maternal wellbeing, reaction to motherhood, family support, mood, and greater self-confidence 26 weeks after delivery, and felt more prepared for parenting.

CONCLUSION

As a result of the limited sample size, the study was unable to detect a difference in maternal depression using the maternal EPDS mean score. The antenatal preparation for parenting programme did not improve postnatal maternal anxiety or parenting stress; however, it did improve postnatal maternal wellbeing, mood, self-confidence, reaction to motherhood, and better prepared mothers to parent twin infants. Midwives have a key role in preparing mothers to parent twins.

Parenting Stress, Social Support, and Mother-Child Interactions in Families of Multiple and Singleton Preterm Toddlers

The study investigated family support as a buffer of stress in 153 mothers and preterm toddlers. Data were collected regarding maternal depressive symptoms, parenting stress, and family support; infant health; and videotaped mother-child interactions. Although more parenting stress related to less optimal child play, only information support functioned as a protective factor. Information support predicted positive play under high, but not low, maternal stress. Mothers of multiples reported more parenting stress than mothers of singletons.

How Long Do the Consequences of Parental Preference Last: A Study of Twins From Pregnancy to Young Adulthood

We analyzed depressive and psychosomatic symptoms in relation to parental preference in 419 twins at the age of 22 to 30 years. Depressiveness was elicited with Children's Depression Inventory and reported as a total score and three subscales (low self-confidence, anhedonia and sadness) based on factor analysis as reported in a previous epidemiological study conducted in Finland. Items assessing nervous complaints and somatic symptoms were adapted from Finnish studies of juvenile health habits. Twins reported the preference in two directions: experienced parental preference towards either twin, and twin's own preference towards either parent. About half of the twins were from pairs where both twins experienced having been equally close to both parents, while about 30% were from ‘equal and mother's’ pair, where one twin evaluated having been preferred by the mother and the co-twin evaluated having been equally close to both parents. According to the twins' own preference, about one third of the twin pairs were ‘both equal’, one third ‘both mother's’ and one third ‘equal and mother's’. Those male twins who were equally close to both parents (experienced parental preference) had least total depressiveness, while females in the intermediate situation had the highest self-confidence and least anhedonia and nervousness. According to twins' own preference, twins who felt equally close to both parents had the least depressiveness and anhedonia. The intermediate position seems to be the best alternative, as these twins had the least symptoms.

Correlates of negative and positive mood state in mothers of twins

Relationships between parenting distress, social support, and sense of competence and negative and positive maternal mood were assessed in 162 mothers with twins younger than 2 years. Women with lower satisfaction scores on the sense of competence scale reported higher negative mood (adjusted R(2) = 21.7%, p < .001). Women with lower parenting distress and higher efficacy scores on the sense of competence scale reported higher positive mood (adjusted R(2) = 39.4%, p < .001). Neither instrumental nor subjective social support contributed to variance in maternal mood. Interventions should be aimed at decreasing parenting distress and increasing sense of competence for mothers of twins.

Sleep patterns and fatigue in parents of twins

OBJECTIVE

To examine patterns of postpartum parental sleep and levels of fatigue at 2, 12, and 20 weeks following hospital discharge of newborn twins.

DESIGN

Descriptive longitudinal pilot study.

SETTING

Recruitment from 2 hospital postpartum units. Data collected in parents' homes.

PARTICIPANTS

Eight primiparous parents caring for twins delivered at 33 to 38 weeks gestation.

METHODS

Home visits to deliver and retrieve study equipment: wrist actigraphy and sleep diaries to measure sleep, standardized instrument to measure fatigue, and an investigator-developed form to measure demographics and related variables.

RESULTS

Fathers had significantly less night sleep (5.4 hours) and less 24 hour sleep (5.8 hours) than mothers (6.2 and 6.9 hours, respectively) at 2 weeks after twins were discharged. Sleep efficiency increased significantly over time in a linear fashion for both parents. Morning and evening fatigue levels were not significantly different between parents and remained constant over time.

CONCLUSION

Pilot data suggest that mothers and especially fathers of twins experience sleep disturbances after discharge of their twins. Further study is needed to more fully describe the evolution of sleep patterns and clarify factors that influence sleep in parents of twins.

Together or apart? A behavioural and physiological investigation of sleeping arrangements for twin babies

OBJECTIVE

the pros and cons of co-bedding for healthy twin babies on the postnatal ward and in the home are issues with which midwives need to be familiar; however, little objective research has been conducted on which to base policies and recommendations. In this two-part study, I explore the behaviour and physiology of twin babies sleeping separately and together.

DESIGN, SETTING AND PARTICIPANTS

in part one, 10 twin baby pairs aged between 1 and 3 months were videoed sleeping together at home in head to head and side by side configurations. In part two, 14 twin pairs under 3 months of age participated in a two-condition trial with behavioural and physiological monitoring while sleeping together and apart in the sleep lab.

FINDINGS

in part one, sleep variables were unaffected by co-bedding configuration. Babies positioned side by side were observed to occasionally impinge on, but not obstruct, one another's airways, with an arm across the other's face. In part two, no difference was found in their duration of sleep, frequency of waking, core temperature or head covering in the two conditions; co-bedded twins showed synchronous sleep states.

CONCLUSIONS

the co-bedding of term twin babies less than 3 months of age does not seem to be associated with the negative attributes that concern some parents. There may also be advantages of sleep synchrony and ease of care. These results can be used by health professionals in formulating guidance for parents of twins.

Co-Bedding Twins

BACKGROUND

Co-bedding, a developmental care practice for twins and multiples, has been theorized as a strategy to decrease the adverse neurodevelopmental effects that may be associated with hospitalization.

OBJECTIVE

The aim of this study was to determine the feasibility of study design, methods, and the measurement of desired outcomes for the development of a larger multicentered study.

RESULTS

Study findings were used to estimate effect size, determine staff and bedside care organization, evaluate feasibility of data collection measures, and identify issues related to recruitment and follow-up. Results were incorporated in the development of a larger multicentered trial grant proposal.

DISCUSSION

Pilot studies can play an important role in the development of a competitive grant proposal and efficient conduct of a research trial. Pilot studies strengthen a proposal by providing essential baseline information. A general overview of the purpose of pilot studies is provided here, along with a description of the process of using findings from a pilot study to inform the development of a larger multisite trial. Findings from this pilot study examining the effects of co-bedding on twins and their parents are used to revise the research protocol for a larger multisite trial. These changes, which lead to improvement to the protocol, and the rational for these changes are highlighted.

Correlates of mother–premature infant interactions

This study's purpose was to examine whether child characteristics, child illness severity, maternal characteristics, maternal psychological well-being, and paternal support influenced interactions between 108 premature infants and their mothers. Mothers with singletons or more infant illness stress showed more positive involvement. Mothers with less infant illness stress, less education, or less participation in caregiving by fathers showed more negative control. First-time mothers and mothers of singletons provided more developmental stimulation. Children of younger and White mothers showed more social behaviors. Less maternal education and shorter period of mechanical ventilation were associated with greater developmental maturity. Greater maternal worry was related to more child irritability. These findings are consistent with the developmental science view that the mother-premature relationship is a complex, reciprocal process.

Reducing premature infants' length of stay and improving parents' mental health outcomes with the Creating Opportunities for Parent Empowerment (COPE) neonatal intensive care unit program: a randomized, controlled trial

OBJECTIVE

Although low birth weight premature infants and parents are at high risk for adverse health outcomes, there is a paucity of studies that test early NICU interventions with parents to prevent the development of negative parent-infant interaction trajectories and to reduce hospital length of stay. Our objective was to evaluate the efficacy of an educational-behavioral intervention program (ie, Creating Opportunities for Parent Empowerment) that was designed to enhance parent-infant interactions and parent mental health outcomes for the ultimate purpose of improving child developmental and behavior outcomes.

DESIGN, SETTING, AND PARTICIPANTS

A randomized, controlled trial was conducted with 260 families with preterm infants from 2001 to 2004 in 2 NICUs in the northeast United States. Parents completed self-administered instruments during hospitalization, within 7 days after infant discharge, and at 2 months' corrected age. Blinded observers rated parent-infant interactions in the NICU.

INTERVENTION

All participants received 4 intervention sessions of audiotaped and written materials. Parents in the Creating Opportunities for Parent Empowerment program received information and behavioral activities about the appearance and behavioral characteristics of preterm infants and how best to parent them. The comparison intervention contained information regarding hospital services and policies.

MAIN OUTCOME MEASURES

Parental stress, depression, anxiety, and beliefs; parent-infant interaction during the NICU stay; NICU length of stay; and total hospitalization were measured.

RESULTS

Mothers in the Creating Opportunities for Parent Empowerment program reported significantly less stress in the NICU and less depression and anxiety at 2 months' corrected infant age than did comparison mothers. Blinded observers rated mothers and fathers in the Creating Opportunities for Parent Empowerment program as more positive in interactions with their infants. Mothers and fathers also reported stronger beliefs about their parental role and what behaviors and characteristics to expect of their infants during hospitalization. Infants in the Creating Opportunities for Parent Empowerment program had a 3.8-day shorter NICU length of stay (mean: 31.86 vs 35.63 days) and 3.9-day shorter total hospital length of stay (mean: 35.29 vs 39.19 days) than did comparison infants.

CONCLUSIONS

A reproducible educational-behavioral intervention program for parents that commences early in the NICU can improve parent mental health outcomes, enhance parent-infant interaction, and reduce hospital length of stay.

Prenatal attachment and other correlates of postnatal maternal attachment to twins

PURPOSE

To determine the relationship of prenatal attachment and other selected perinatal contextual variables (method of delivery, maternal self-reported health, depression, infant birthweight, need for neonatal intensive care unit [NICU] admission) to postnatal attachment in mothers of twins.

SUBJECTS

Two hundred fourteen women were initially recruited from a national mothers of twins support group for a study of maternal prenatal attachment. Of the 168 women who agreed to be contacted after delivery, 142 returned completed questionnaires (82.7% response rate), with 139 study-eligible women included in the analysis for this report.

STUDY DESIGN

Correlational design with longitudinal follow-up at 1 month after expected delivery date.

METHODS

Self-administered, mailed questionnaires completed by women with twin gestations prenatally and postnatally 1 month after their expected delivery dates. Descriptive analysis, correlations, and regression equations were performed.

MAIN OUTCOME MEASURES

The Maternal Attachment Inventory.

PRINCIPLE RESULTS

A modest correlation was found between prenatal and postnatal attachment ( r = 0.38, P < 0.001). Prenatal attachment and postpartum depression explained 26.1% of the variance in postnatal attachment ( F = 5.06, P < 0.001). Depression, method of delivery, and need for admission to the NICU had moderator effects on the relationship between prenatal attachment and postnatal attachment. The addition of these interaction terms nominally increased the adjusted R 2 to explain 27.9% to 29.6% of the variance in postnatal attachment.

CONCLUSIONS

Although the study findings support a modest relationship between prenatal and postnatal attachment in mothers of twins, maternal depression was also significant in explaining postnatal attachment. Postpartum depression, having a cesarean delivery, and the experience of a NICU admission for 1 or both twins further influenced the relationship between prenatal attachment and postnatal attachment. When fostering attachment in mothers of twins, nurses should assess for symptoms of depression and pay particular attention to those women who have an infant requiring a NICU admission.

Predictors of Prenatal Attachment in Mothers of Twins

OBJECTIVES

To explore the predictive relationship between prenatal attachment and selected demographic and biopsychosocial factors and to compare these predictors to those identified in previous research on maternal attachment in singleton pregnancies.

DESIGN

A predictive correlational descriptive design.

SETTING

Data were obtained via mailed surveys.

PARTICIPANTS

214 women expecting twins were recruited from a national mother of twins support group.

MAIN OUTCOME MEASURES

Instruments included the Rosenberg Self-Esteem Scale, Norwood Social Support Apgar, Miller Prenatal Attachment Inventory, and a demographic data tool to collect data on perinatal factors of gestational age, infertility history, perceived risk status, fetal movement, and planning of pregnancy.

RESULTS

Women who were younger, with lower income, a history of infertility, greater self-esteem, who had experienced quickening, and were further along in their pregnancy reported greater prenatal attachment to their twins (Adjusted R2 = 19.4%, p < .001). Perceived risk, social support, and planning of pregnancy did not predict level of attachment.

CONCLUSION

Factors that influence attachment in women experiencing a twin pregnancy are complex, and much is still unknown. Development and testing of theory is needed to guide future research and practice.

Breast Milk Feeding Rates of Mothers of Multiples Compared to Mothers of Singletons

OBJECTIVE

Over 3% of infants born annually in the United States are from a multiple gestation pregnancy, yet there is little data published about the feeding practices of their mothers. The objectives of this study were to determine and compare the rates of breast milk feeding of mothers of multiples and mothers of singletons.

METHODS

Stratified random sampling (n = 686) on the basis of plurality of pregnancy and gestational age at delivery was performed on a 1999 birth certificate database in the greater Cincinnati area. We collected information about infant feeding during the first 6 months of life using a retrospective, self-administered questionnaire and phone interview from mothers of term singletons (TS), preterm singletons (PS), term multiples (TM), and preterm multiples (PM). Data were analyzed using chi-square and logistic or multiple regression.

RESULTS

We obtained feeding information from 346 mothers (n = 81 TS, 80 PS, 90 TM, and 95 PM). By 3 days postpartum, PM provided breast milk less often than all other groups: TS = 69%, PS = 66%, TM = 73%, PM = 57% (P =.035). Among mothers who initiated breast milk feeding, the geometric mean duration of at least some breast milk feeding was significantly shorter for PM than for all other groups: TS = 23 weeks, PS = 19 weeks, TM = 24 weeks, and PM = 12 weeks (P =.002).

CONCLUSIONS

Further evaluation of the potential causes for the lower breast milk feeding rates among PM is needed to develop effective intervention strategies and increase the number of preterm multiple gestation infants receiving breast milk.

Parent-Infant Synchrony and the Social-Emotional Development of Triplets

To study the social-emotional development of triplets, 23 sets of triplets, 23 sets of twins, and 23 singleton infants (N=138) were followed from birth to 2 years. Maternal depression and social support were assessed in the postpartum period, mother-infant and father-infant interaction and the home environment were observed at 3 months, a separation-reunion episode and a maternal interview were conducted at 12 months, and infant behavior problems were evaluated at 24 months. Lower parent-infant synchrony was observed for triplets. Triplets showed less distress during maternal separation and less approach at reunion. Mothers reported lower adjustment and differentiation among siblings for triplets than for twins. Higher internalizing problems were reported for triplets, and the triplet with intrauterine growth retardation showed the poorest outcomes. Behavior problems were predicted by medical risk, maternal depression, parent-infant synchrony, infant approach, and mother adjustment. Discussion focuses on developmental risk when the exclusivity of the parent-infant relationship is compromised.

Seeing the Forest for the Trees: A Qualitative Synthesis Project

Although qualitative studies are increasing in the discipline of nursing, their clinical application and knowledge development will be impeded unless the rich understandings revealed in these individual studies can be synthesized. Meta-synthesis is an invaluable method for accumulating knowledge from individual qualitative studies. This article describes a project focusing on qualitative synthesis that the author required her nursing students in a graduate-level research course to complete. In addition, qualitative meta-synthesis is defined, and its benefits are discussed. Then, Noblit and Hare's approach for synthesizing qualitative studies is described. The remainder of the article is devoted to explaining the actual course project and students' evaluation of the project. The benefits of having graduate students conduct a meta-synthesis are many, and as one student shared, "It was a wonderful, very interesting, and challenging way to teach us."

Mothering multiples: a meta-synthesis of qualitative research

Increasing numbers of qualitative studies in maternal-child nursing are being published. However, clinical application and knowledge development based on those studies will be hampered unless the rich understandings gleaned from these individual studies can be synthesized. Meta-synthesis is one technique to help accumulate knowledge from qualitative research. The first section of this article explains the technique of meta-synthesis and reviews meta-syntheses published in nursing. The focus then becomes an illustration of a meta-synthesis in maternal-child nursing: Mothering multiples during the first year of life. Six qualitative studies comprised the sample for the meta-synthesis. The meta-synthesis revealed a shared set of five themes that help increase our understanding of mothering multiples: "bearing the burden," "riding an emotional roller coaster," "lifesaving support," "striving for maternal justice," and "acknowledging individuality." Implications for practice derived from this meta-synthesis are addressed.

Prenatal behavior of multiples: implications for families and nurses

Each twin and higher order multiple leads an extraordinary life before birth. The literature has revealed that the intrauterine environment differs for every multiple fetus and helps to shape the individuality of each multiple-birth child. From early in pregnancy, it appears that a multiple develops his or her own temperament and each set of multiples establishes an individualized pattern of tactile communication between or among themselves. The same behaviors, traits, and intermultiple interactions seen in pregnancy also have been observed in infancy and beyond. Intermultiple communication continues after birth, and preliminary evidence suggests that co-bedding assists the majority of newborns to make the transition from intrauterine to extrauterine life. The response of a multiple to the death of a co-multiple during pregnancy or after birth may be influenced by the relationship they shared in utero. Nurses and other health care providers have a role to play in informing multiple-birth parents about the latest knowledge, thereby assisting parents with the attachment process and specific parenting issues. In addition, nurses now have a solid foundation on which to create and implement care strategies that promote the healthy development of each multiple-birth infant and the intermultiple relationship.

Releasing the pause button: mothering twins during the first year of life

The purpose of this grounded theory study was to investigate the basic social psychological problem mothers of twins experience during the first year after delivery and the process they use to resolve this fundamental problem. Life on hold was the basic social psychological problem that mothers of twins experienced during the first year of their twins' lives. Releasing the pause button was the four-stage process mothers progressed through as they attempted to resume their own lives. These four phases were (a) draining power, (b) pausing own life, (c) striving to reset, and (d) resuming own life. The most vulnerable period for mothers of twins is the first 3 months postpartum. Intensive interventions need to be in place to support women during this time.

Shared kangaroo care for triplets

The mother in this case study already had four children at home and was afraid she would be unable to bond to three additional babies. This article describes her experiences with shared kangaroo care (holding all three infants at once), how these experiences relieved her fears, and how kangaroo care was extended by co-bedding the triplets in a single pediatric crib. Clinical nurse specialists and advanced nurse practitioners can use the successful outcome reported here to promote kangaroo care for families with naturally occurring triplets as well as those families whose triplets result from treatment for infertility.

Feeding and non-feeding interactions of mothers and prematures

The interactions between mothers and premature infants during feeding and nonfeeding periods were explored. Twenty-nine premature infants and their mothers were observed interacting for 1 hour in their homes at 6 months corrected for prematurity. Mothers were more likely to engage in the following behaviors involving close contact during feeding: looking at the infant, holding the infant, having body contact, and rocking their infants. They interacted with their infants 96% of feeding time. During nonfeeding periods, they were more likely to engage in more distal behaviors (e.g., gesturing, touching, and playing with the infant) and spent only 67% of the time interacting with the infant. Infants were more likely to be alert, vocalize, play with objects, express negative affect, and locomote during nonfeeding, and they were more likely to be drowsy or asleep during feeding. Therefore, a complete understanding of interactions between mothers and prematures can only come from examining both feeding and nonfeeding periods.