Applying Rasch methodology to examine and enhance precision of the Edinburgh Postnatal Depression Scale.

BACKGROUND: The 10-item Edinburgh Postnatal Depression Scale (EPDS) is a widely used depression measure with acceptable psychometric properties, but it uses ordinal scaling that has limited precision for assessment of outcomes in clinical and research settings. This study aimed to apply Rasch methodology to examine and enhance psychometric properties of the EPDS by developing ordinal-to-interval conversion algorithm. METHODS: The Partial Credit Rasch model was implemented using a sample of 621 mothers of infants (birth to 2 years old) who completed the EPDS as a part of a larger online survey. RESULTS: Initial analysis indicated misfit to the Rasch model attributed to local dependency between individual EPDS items. The best model fit was achieved after combining six locally dependent items into three super-items resulting in non-significant item-trait interaction (χ2(49) = 46.61, p < 0.57), strong reliability (PSI = 0.86), unidimensionality and item invariance across personal factors such as age and mothers' education. This permitted generation of ordinal-to-interval conversion algorithms derived from person estimates of the Rasch model. LIMITATIONS: Ordinal-to-interval conversion cannot be applied for individuals with missing data. CONCLUSIONS: The EPDS met expectations of the unidimensional Rasch model after internal modifications, and its precision can be enhanced by using ordinal-to-interval conversion tables published in this article without the need to alter the original scale format. Scores derived from these conversion tables should decrease error and improve conformity with statistical assumptions in both clinical and research use of the EPDS, making monitoring of clinical status and outcomes more accurate.

Positively Pregnant: Development and piloting of a mobile app for social and emotional well-being in pregnancy.

This paper describes development of a mobile e-health application, Positively Pregnant, which provides tools to meet the psychological challenges of pregnancy and transition to parenthood. Positively Pregnant was developed with input from maternity carers and consumers, incorporating local cultures and contexts as well as international research on effective interventions for stress management and mental well-being. The prototype app was piloted with 88 New Zealand women. Participants in the pilot used an average of 11.96 (SD = 7.44) components, and most were satisfied (45.1%) or neutral (40.3%) regarding the app. For 23 of the 26 interactive components, the majority of those who tried the component reported that they found it helpful. Participants reported a significant reduction in subjective stress (η2 = .088, p = .023). Feedback from pilot participants was incorporated in a version of the app that was publically launched as a free tool to support developing families. Mobile e-health applications are a promising medium for providing preventative interventions and psychoeducation about the social and emotional challenges of pregnancy and early parenting; Positively Pregnant is an example of a tool, grounded in strength-based, empirically supported strategies, to provide parents with support and information at this critical time.

Distress levels in pregnant and matched non-pregnant women.

This study examined self-rated symptoms of distress (Depression Anxiety and Stress Scale-DASS-21 and Perceived Stress Scale-PSS-4) among 93 pregnant women and a comparison group of 93 non-pregnant women matched on age and educational attainment. There were no significant differences between the groups, either on mean levels of distress or on proportions above a clinical cut-off point. Overall, 22%, 31% and 16% of pregnant women reported experiencing at least moderate levels of depression, anxiety and stress, respectively. Implications for conceptualising distress in pregnancy and identifying and providing support for the substantial minority who are distressed are discussed.

How am I, really? Perceptions of health and distress by women and their midwives.

OBJECTIVE: This study examined agreement between ratings of health and emotional distress by women and their midwives. BACKGROUND: Physical complaints and medical complications during pregnancy can significantly impact a woman's experience of pregnancy. Previous studies have found that women and their healthcare providers may have differing perceptions of their condition and how they are coping with the challenges of pregnancy. METHODS: This study used questionnaires completed by women and their midwives to assess perceptions of health and emotional distress in two contexts. Sixty-eight of the women were on an antenatal unit, hospitalised for complications of their pregnancy; 33 women were a comparison group in community maternity care. FINDINGS: Many women in the hospital experienced high levels of emotional distress and worry about their pregnancy; 45% scored in the clinical range on state anxiety, and 28% screened positive for depression. However, midwives rating emotional distress did not pick up on this consistently, and women and hospital midwives often viewed their health status differently. In the community, women's ratings of their health were more consistent with the ratings of their midwives, and midwives were attuned to acute anxiety, but had more difficulty picking up on cues to depression. CONCLUSION: It is challenging, particularly in the unfamiliar and stressful environment of the antenatal unit, for midwives to assess emotional distress and needs for health information. Deliberate screening for antenatal distress might provide the opening for midwives to empower women to identify their options, strengths, and strategies for self-care and emotional resilience.

Predictors of anxiety among pregnant New Zealand women hospitalised for complications and a community comparison group.

OBJECTIVE: to investigate predictors of anxiety for women experiencing hospitalisation during pregnancy and a comparison group of pregnant women (with or without medical complications) in the community. DESIGN: correlational, cross-sectional observational questionnaire study. SETTING: regional antenatal inpatient unit and community-based settings in New Zealand in 2009 and 2010. PARTICIPANTS: 118 pregnant women in hospital and 114 pregnant women in community. MEASUREMENTS AND FINDINGS: women in hospital and community groups completed a battery of questionnaires on pregnancy and health history, life events, anxiety, optimism, coping, and relationship factors. Midwives caring for the women provided ratings of health status and psychological distress. Both groups of women had scores on state anxiety significantly above local norms; women in the hospital were significantly higher than those in the community on state anxiety and worry about their pregnancy. The groups did not differ on factors such as life events, optimism, and coping self-efficacy. Ratings of health and distress made by women and their midwives showed poor agreement. Predictors of acute anxiety differed across the groups: for hospitalised women, anxiety was predicted by their rating of their health and their dispositional optimism; for women in the community, anxiety was predicted by stressful life events, dispositional optimism, and coping self-efficacy. KEY CONCLUSIONS: many women hospitalised during pregnancy are extremely anxious, and those most vulnerable are those who are less optimistic and see their health as poor. Health care professionals may not be aware of how anxious women are, and women and their hospital caregivers had poor agreement on ratings of the woman׳s health status. IMPLICATIONS FOR RESEARCH AND PRACTICE: women hospitalised during pregnancy are at risk for high levels of anxiety. Midwives are well placed to help women by recognising their distress, supporting informed optimism, and guiding women toward realistic coping strategies and using existing social support networks. Research is needed on strategies for implementation and effectiveness of brief interventions to support women to manage anxiety and stress during pregnancy both in hospital and in the community.

Homeless near a thousand homes: outcomes of homeless youth in a crisis shelter.

Clients who received crisis services at a homeless shelter for transition-aged youth were recruited for a study to describe the youth served, to track outcomes of care, and to examine factors associated with differing outcomes. Participants were 202 men and women who completed a battery of interviews and self-report measures at intake and at 3 follow-up points. Youth served had experienced high levels of adversity and trauma and typically had poor educational and vocational preparation. A multidisciplinary array of services was provided, and overall, participants showed significant improvement from intake to discharge and in the 6 months after discharge. Background, service, and psychological factors did not predict housing outcomes. Better vocational outcome was associated with more recent work experience. Results point to the need for providers of services to the homeless to be aware of the distinct needs and characteristics of transition-aged youth.

The Target Symptom Rating: a brief clinical measure of acute psychiatric symptoms in children and adolescents.

Describes the development and psychometric properties of the Target Symptom Rating (TSR), a brief, multi-informant measure of commonly observed symptoms in child and adolescent clinical work. In a large sample of children and adolescents in inpatient and residential treatment, the 13 TSR items fell into 2 subscales: Emotional Problems and Behavior Problems, which were associated in expected ways with the Internalizing and Externalizing factors of the Achenbach scales and the Child and Adolescent Functional Assessment Scale (CAFAS). The measure was sensitive to change in brief and extended treatment, as rated by parents, patients, primary clinicians, and family therapists, and shows promise as a tool for outcome research in applied settings.