Anne K. Duggan

Randomised study of cognitive effects of iron supplementation in non-anaemic iron-deficient adolescent girls

BACKGROUND Up to 25% of adolescent girls in the USA are iron deficient. This double-blind, placebo-controlled clinical trial assessed the effects of iron supplementation on cognitive function in adolescent girls with non-anaemic iron deficiency. METHODS 716 girls who enrolled at four Baltimore high schools were screened for non-anaemic iron deficiency (serum ferritin < or = 12 micrograms/L with normal haemoglobin). 98 (13.7%) girls had non-anaemic iron deficiency of whom 81 were enrolled in the trial. Participants were randomly assigned oral ferrous sulphate (650 mg twice daily) or placebo for 8 weeks. The effect of iron treatment was assessed by questionnaires and haematological and cognitive tests, which were done before treatment started and repeated after the intervention. We used four tests of attention and memory to measure cognitive functioning. Intention-to-treat and per-protocol analyses were done. FINDINGS Of the 81 enrolled girls with non-anaemic iron deficiency, 78 (96%) completed the study (39 in each group). Five girls (three control, two treatment) developed anaemia during the intervention and were excluded from the analyses. Thus, 73 girls were included in the per-protocol analysis. Ethnic distribution, mean age, serum ferritin concentrations, haemoglobin concentrations, and cognitive test scores of the groups did not differ significantly at baseline. Postintervention haematological measures of iron status were significantly improved in the treatment group (serum ferritin 27.3 vs 12.1 micrograms/L, p < 0.001). Regression analysis showed that girls who received iron performed better on a test of verbal learning and memory than girls in the control group (p < 0.02). INTERPRETATION In this urban population of non-anaemic iron-deficient adolescent girls, iron supplementation improved verbal learning and memory.

Evaluation of Hawaii's Healthy Start Program

Hawaiis Healthy Start Program (HSP) is designed to prevent child abuse and neglect and to promote child health and development in newborns of families at risk for poor child outcomes. The program operates statewide in Hawaii and has inspired national and international adaptations, including Healthy Families America. This article describes HSP, its ongoing evaluation study, and evaluation findings at the end of two of a planned three years of family program participation and follow-up. After two years of service provision to families, HSP was successful in linking families with pediatric medical care, improving maternal parenting efficacy, decreasing maternal parenting stress, promoting the use of nonviolent discipline, and decreasing injuries resulting from partner violence in the home. No overall positive program impact emerged after two years of service in terms of the adequacy of well-child health care; maternal life skills, mental health, social support, or substance use; child development; the childs home learning environment or parent-child interaction; pediatric health care use for illness or injury; or child maltreatment (according to maternal reports and child protective services reports). However, there were agency-specific positive program effects on several outcomes, including parent-child interaction, child development, maternal confidence in adult relationships, and partner violence. Significant differences were found in program implementation between the three administering agencies included in the evaluation. These differences had implications for family participation and involvement levels and, possibly, for outcomes achieved. The authors conclude that home visiting programs and evaluations should monitor program implementation for faithfulness to the program model, and should employ comparison groups to determine program impact.

Home visiting for adolescent mothers: Effects on parenting, maternal life course, and primary care linkage

PURPOSE Adolescent mothers are at risk for rapidly becoming pregnant again and for depression, school dropout, and poor parenting. We evaluated the impact of a community-based home-visiting program on these outcomes and on linking the adolescents with primary care. METHODS Pregnant adolescents aged 12 to 18 years, predominantly with low incomes and of African American race, were recruited from urban prenatal care sites and randomly assigned to home visiting or usual care. Trained home visitors, recruited from local communities, were paired with each adolescent and provided services through the child’s second birthday. They delivered a parenting curriculum, encouraged contraceptive use, connected the teen with primary care, and promoted school continuation. Research assistants collected data via structured interviews at baseline and at 1 and 2 years of follow-up using validated instruments to measure parenting (Adult-Adolescent Parenting Inventory) and depression (Center for Epidemiologic Studies Depression). School status and repeat pregnancy were self-reported. We measured program impact over time with intention-to-treat analyses using generalized estimating equations (GEE). RESULTS Of 122 eligible pregnant adolescents, 84 consented, completed baseline assessments, and were randomized to a home-visited group (n = 44) or a control group (n = 40). Eighty-three percent completed year 1 or year 2 follow-up assessments, or both. With GEE, controlling for baseline differences, follow-up parenting scores for home-visited teens were 5.5 points higher than those for control teens (95% confidence interval, 0.5–10.4 points; P = .03) and their adjusted odds of school continuation were 3.5 times greater (95% confidence interval, 1.1–11.8; P <.05). The program did not have any impact on repeat pregnancy, depression, or linkage with primary care. CONCLUSIONS This community-based home-visiting program improved adolescent mothers’ parenting attitudes and school continuation, but it did not reduce their odds of repeat pregnancy or depression or achieve coordination with primary care. Coordinated care may require explicit mechanisms to promote communication between the community program and primary care.

Motivational intervention to reduce rapid subsequent births to adolescent mothers: a community-based randomized trial.

PURPOSE One-quarter of adolescent mothers bear another child within 2 years, compounding their risk of poorer medical, educational, economic, and parenting outcomes. Most efforts to prevent rapid subsequent birth to teenagers have been unsuccessful but have seldom addressed motivational processes. METHODS We conducted a randomized trial to determine the effectiveness of a computer-assisted motivational intervention (CAMI) in preventing rapid subsequent birth to adolescent mothers. Pregnant teenagers (N = 235), aged 18 years and older who were at more than 24 weeks’ gestation, were recruited from urban prenatal clinics serving low-income, predominantly African American communities. After completing baseline assessments, they were randomly assigned to 3 groups: (1) those in CAMI plus enhanced home visit (n = 80) received a multi-component home-based intervention (CAMI+); (2) those in CAMI−only (n = 87) received a single component home-based intervention; (3) and those in usual-care control (n = 68) received standard usual care. Teens in both intervention groups received CAMI sessions at quarterly intervals until 2 years’ postpartum. Those in the CAMI+ group also received monthly home visits with parenting education and support. CAMI algorithms, based on the transtheoretical model, assessed sexual relationships and contraception-use intentions and behaviors, and readiness to engage in pregnancy prevention. Trained interventionists used CAMI risk summaries to guide motivational interviewing. Repeat birth by 24 months’ postpartum was measured with birth certificates. RESULTS Intent-to-treat analysis indicated that the CAMI+ group compared with the usual-care control group exhibited a trend toward lower birth rates (13.8% vs 25.0%; P = .08), whereas the CAMI-only group did not (17.2% vs 25.0%; P = .32). Controlling for baseline group differences, the hazard ratio (HR) for repeat birth was significantly lower for the CAMI+ group than it was with the usual-care group (HR = 0.45; 95% CI, 0.21–0.98). We developed complier average causal effects models to produce unbiased estimates of intervention effects accounting for variable participation. Completing 2 or more CAMI sessions significantly reduced the risk of repeat birth in both groups: CAMI+ (HR = 0.40; 95% CI, 0.16–0.98) and CAMI−only (HR = 0.19; 95% CI, 0.05–0.69). CONCLUSIONS Receipt of 2 or more CAMI sessions, either alone or within a multicomponent home-based intervention, reduced the risk of rapid subsequent birth to adolescent mothers.

Ipratropium bromide added to asthma treatment in the pediatric emergency department.

Objective. To determine if the addition of ipratropium bromide to the emergency department (ED) treatment of childhood asthma reduces time to discharge, number of nebulizer treatments before discharge, and the rate of hospitalization. Methods. Patients >12 months of age were eligible if they were to be treated according to a standardized ED protocol for acute asthma with nebulized albuterol (2.5 mg/dose if weight <30 kg, otherwise 5 mg/dose) and oral prednisone or prednisolone (2 mg/kg up to 80 mg). Subjects were randomized to receive either ipratropium (250 μg/dose) or normal saline (1 mL/dose) with each of the first three nebulized albuterol doses. Further treatment after the first hour was determined by physicians blinded to subject group assignment. Records were reviewed to determine the length of time to discharge home from the ED, number of doses of albuterol given before discharge, and the number of patients admitted to the hospital. Results. Four hundred twenty-seven patients were randomized to ipratropium or control groups; these groups were similar in all baseline measures. Among patients discharged from the ED, ipratropium group subjects had 13% shorter treatment time (mean, 185 minutes, vs control, 213 minutes) and fewer total albuterol doses (median, three, vs control, four). Admission rates did not differ significantly (18%, vs control, 22%). Conclusions. The addition of three doses of ipratropium to an ED treatment protocol for acute asthma was associated with reductions in duration and amount of treatment before discharge.

Parent-Pediatrician Communication about Complementary and Alternative Medicine Use for Children

Anonymous self-report surveys of a convenience sample of caregivers accompanying children to the pediatrician for acute or well visits at 4 pediatric practices in the Washington, DC area from July through November 1998 were evaluated. Three hundred seventy-eight (85%) of 443 caregivers approached participated. The 348 surveys completed by parents (92%) were analyzed. As previously reported, in this sample 21% of parents used complementary and alternative medicine (CAM) for their child. Overall, 53% of parents expressed the desire to discuss CAM with their pediatrician, increasing to 75% (p<0.001) among those who used CAM themselves and 81% (p<0.01) among those who used CAM for their child. Among parents who used CAM for their child, 36% had discussed it with their pediatrician. Factors associated with increased disclosure to the pediatrician were CAM use in children younger than 6 years (p<0.05), “bioenergetic” CAM use (p<0.02), and parent CAM non-use (p<0.05). Despite parents’ significant interest in discussion about CAM, few factors were associated with adequate parent-pediatrician communication.

Screening for iron deficiency anemia by dietary history in a high-risk population.

BACKGROUND Iron deficiency anemia (IDA) in young children is important to identify because of its adverse effects on behavior and development. Because of costs and inconvenience associated with blood test screening and the decline in prevalence of IDA, the Institute of Medicine and the Centers for Disease Control and Prevention recommend that blood test screening for IDA be targeted to children first identified by dietary and health history. OBJECTIVE To evaluate a parent-completed dietary and health history as the first stage of 2-stage screening for IDA. DESIGN AND METHODS A cross-sectional study was conducted in inner-city clinics in children 9 to 30 months old having routine anemia screening as part of a scheduled visit. Parents completed a questionnaire and children had venous blood sampling for complete blood count and ferritin. Anemia was defined as Hb <11.0 g/dL. Iron deficiency (ID) was defined as ferritin <10 microg/L or mean corpuscular volume <70 fL and red cell distribution width >14.5%. Children were categorized into 1 of 4 groups: iron-sufficient, not anemic (ISNA); iron-sufficient, anemic (ISA); iron-deficient, not anemic (IDNA); and iron-deficient anemic (IDA). The questionnaire consisted of 15 dietary items in domains of infant diet, intake of solid food, intake of beverages, and participation in the Special Supplemental Nutrition Program for Women, Infants, and Children together with 14 historical items in domains of birth history, recent illness, chronic medical conditions, history of anemia, and maternal history. Analysis was performed on individual items, domains, and combinations of selected items. RESULTS In the 282 study subjects, the prevalence of anemia (35%), IDNA (7%), and IDA (8%) did not vary significantly by age. Among individual historical and dietary questions, maternal history of anemia and drinking >2 glasses of juice per day identified the highest proportion of children with IDA: 50% sensitivity (95% confidence interval [CI]: 16,81) and 77% sensitivity (95% CI: 54,89), respectively. However, specificities for these questions were 60% (95% CI: 55,65) and 22% (95% CI: 17,27), respectively. Domains of questions with the highest sensitivity for IDA were beverage intake (91%; 95% CI: 68,99) and intake of solid food (91%; 95% CI: 68,99). However, specificities of the domains were only 14% (95% CI: 10,18) and 29% (95% CI: 24,35), respectively. The dietary items used by Boutry and Needlman were 95% (95% CI: 77, 99) sensitive but only 15% (95% CI: 11,19) specific for IDA. The recommendations of the Centers for Disease Control and Prevention for health and dietary screening were 73% (95% CI: 56,92) sensitive and 29% (95% CI: 24,35) specific for IDA. The individual questions, domains of questions, and interdomain groups of questions had similar sensitivity and specificity for anemia and ID (IDA + IDNA). CONCLUSION In this high-risk population, neither individual nor combinations of parental answers to dietary and health questions were able to predict IDA, anemia, or ID well enough to serve as a first-stage screening test.

Examining Maternal Depression and Attachment Insecurity as Moderators of the Impacts of Home Visiting for At-Risk Mothers and Infants

Home visiting programs for at-risk mothers and their infants have proliferated nationally in recent years, yet experimental studies of home visiting have yielded mixed findings. One promising strategy for explicating the effects of early home visiting is to examine moderators of program impacts. This study assessed the roles of maternal depression and attachment insecurity as moderators of the impacts of Healthy Families Alaska home visiting services for at-risk mothers and their infants. At-risk families (N = 325) were randomly assigned to home visiting or community services as usual (n = 162 and 163, respectively). Maternal depression and attachment insecurity (attachment anxiety and discomfort with trust/dependence) were measured at baseline. Maternal psychosocial and parenting outcomes were measured when children were 2 years old via maternal self-report, observation, and review of substantiated reports of child maltreatment. Maternal depression and attachment insecurity interacted in their moderation of program impacts. For several outcomes, home visiting impacts were greatest for nondepressed mothers with moderate-to-high discomfort with trust/dependence and for depressed mothers with low discomfort with trust/dependence. Implications for practice and policy are discussed.

Teenage fathers and the fathers of infants of urban, teenage mothers.

Data from Certificates of Live Birth, for recorded resident births in Baltimore in 1983, were used to describe fathers whose child was born to a teenage mother. Four groups were identified: 1) both father and mother were teenagers (12 per cent); 2) only the mother was a teenager (14 per cent); 3) only the father was a teenager (2 per cent); 4) both parents were aged 20 years of above (72 per cent). The fathers in the first three groups appeared at serious educational and financial disadvantage as compared with those where neither parent was a teenager. Within the teenage parent groups, White fathers had lower educational attainment than Black; one in four White fathers was married vs less than 5 per cent of Black. Although limited in scope, the data indicate that disadvantages associated with being a teenage father or the father of an infant born by a teenage mother are clear cut.

Evaluating a statewide home visiting program to prevent child abuse in at-risk families of newborns: fathers' participation and outcomes

This study sought to describe fathers’ participation in a statewide home-visiting program to prevent child abuse and to assess program impact on their parenting. This randomized trial followed 643 at-risk families for 3 years. Data were collected through program record review, staff surveys, and annual maternal interviews. Participation in visits varied by the parents’ relationship and paternal employment, violence, and heavy drinking at baseline. Overall, the program had no apparent impact on fathers’ accessibility to the child, engagement in parenting activities, and sharing of responsibility for the child’s welfare. The program promoted parenting involvement for nonviolent fathers in couples who lived together but also for violent fathers in couples with little contact at baseline; it decreased the father’s accessibility to the child in couples who lived apart but saw each other frequently at baseline. Infrequent participation in visits and differential program impact on violent versus nonviolent fathers demonstrate the need to consider family context in developing, implementing, and studying home-visiting models.