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Preventative mental health care: accessing the target population.

OBJECTIVE: Preventative approaches to mental illness are becoming a focus of clinical and research settings. To date, however, few clinical programs have been established with this primary aim. This descriptive paper summarises patterns of referral to one service providing clinical care for young people known to be at high risk of developing a psychotic illness. METHODS AND RESULTS: A 20-month survey of referrals to the service revealed that most patients had a prolonged and circuitous route to assessment. Additionally, a lengthy time period elapsed between the onset of symptoms and initiation of help seeking. CONCLUSIONS: Information arising from this survey may influence the development of strategies to improve access to this service and others aimed at the prevention of psychosis. Further, this information may affect the development of generalised preventative mental health services for young people.

Adolescent↗

[Characteristics of a target population for preventing house-dust mite allergy in toddlers].

AIM: To evaluate a recruitment strategy to identify high risk toddlers for a programme of prevention of allergy. For screening, parents were asked to participate in our study by information form and screening questionnaire on the occasion of routine check-up visits of toddlers scheduled between 20 and 48 months of age in four paediatric practices. As a next step, readiness of parents for implementation of preventive measures was confirmed. METHOD: Inclusion criteria were age between 20 and 48 months and a positive atopic family history (evaluated by 5 questions regarding asthma, allergic rhino-conjunctivitis and atopic dermatitis) of parents or siblings. This was confirmed by sensitization to an environmental allergen (skin prick test (SPT)) in at least one parent. If these inclusion criteria were fulfilled, the toddlers were randomly allocated to the intervention and control group of the prevention programme. RESULTS: 111 of 175 screening questionnaires (63.4 %) were returned. In 76.6 % (n = 85) of these 111 questionnaires a positive atopic family history (mother, father, sibling) was noted. All inclusion criteria were fulfilled by only 43 toddlers (age: median 33.6 months, 5-95 % quantile: 21.6-48 months). Based on the positive screening questionnaire, history of atopy was confirmed by positive SPT in 70.0 % of fathers and 77.8 % of mothers. Despite a negative screening questionnaire, history of atopy was detected by a positive SPT in 11.1 % of mothers and 47.4 % of fathers. Detection of specific IgE against house-dust mite in 9 of 18 serum samples revealed the risk for allergy of the toddlers. A re-evaluation after three months showed that all the elements of the prevention programme as well as the recommendations for the control group had been almost completely accepted by all the families concerned practically without any reservations. CONCLUSION: The recruitment of toddlers with high risk for developing allergy turned out well and could be validated. The prevention programme was readily accepted by the families and thus can be used for a larger study.

Antigens, Dermatophagoides↗

Prevention and chemical dependence treatment needs of special target populations.

The prevention and treatment of HIV infection are particularly difficult in certain subpopulations unless consideration is given to their unique characteristics. These characteristics and the strategies to address them are considered with respect to adolescents, rural/low-incidence populations, gay and bisexual men, African-Americans, Latinos, women, and the mentally ill. Alcohol and other drug use must always be addressed in treatment and prevention efforts even if patients do not meet the full criteria for chemical dependence. Health care providers need to consider their own biases as well as the overt and covert messages they project in order to provide the best possible care to these subpopulations.

Acquired Immunodeficiency Syndrome↗

A distinct vesicle population targets membranes and pore complexes to the nuclear envelope in Xenopus eggs.

Extracts from Xenopus eggs capable of nuclear envelope assembly in vitro were fractionated by differential and density gradient centrifugation. Nuclear envelope assembly was found to require soluble components in the cytosol and two distinct particulate fractions, which we have called nuclear envelope precursor fractions A and B (NEP-A and NEP-B). Both NEP-A and NEP-B are sensitive to treatments with trypsin, sodium carbonate, and detergents, but can be distinguished from each other by their sensitivities to high salt and N-ethylmaleimide and by their levels of alpha-glucosidase activity. Vesicles in NEP-B bind to chromatin, whereas those in NEP-A do not. NEP-B may therefore be involved in the targeting of membranes to the surface of the chromatin, whereas NEP-A may provide a pool of vesicles that contributes many of the nuclear envelope membranes. NEP-B may also play a role in the assembly of nuclear pore complexes because the density of nuclear pores in the resulting envelope is dependent on the ratio of NEP-B to NEP-A in the reconstituted extract.

Adenosine Triphosphate↗

Preconceptional cystic fibrosis carrier screening: attitudes and intentions of the target population.

The aim of this study was to assess the attitudes and intentions of individuals planning a pregnancy with regard to preconceptional cystic fibrosis (CF) carrier screening and to determine factors associated with a positive and negative/neutral intention to have the test. A survey, based on a questionnaire, was conducted among a stratified random sample of 303 recently married couples (606 individuals). Of the eligible individuals, 70% (n = 380) participated. Of the respondents, 73% had a positive attitude toward a routine offer of preconceptional CF carrier screening, and 56% had the intention to participate in a screening program. A positive intention to have the test was associated with high perceived anticipation of regret, intended preconceptional behavior, high perceived pressure from experts, high perceived consequences of the test results, low perceived barriers, and low perceived negative consequences for family members. These results suggest that the offer of routine preconceptional CF carrier screening would lead to substantial acceptance among couples planning a pregnancy. Several variables related with intention were identified.

Adult↗

Socioeconomic, demographic, occupational, and health factors associated with participation in a long-term epidemiologic survey: a prospective study of the French GAZEL cohort and its target population.

The purpose of this paper is to examine personal and health factors, both at the beginning of the study and thereafter, associated with participation in the GAZEL cohort, set up in 1989 in a large French company. The authors used logistic regression to analyze the associations between participation and data available for both participants (n = 20,093) and nonparticipants (n = 24,829). Higher participation was associated with male sex, marriage, children, managerial status, and residence in particular regions. Among men, lower participation was associated with sick leave in the year before recruitment and afterwards. During follow-up, participation was negatively associated with several groups of diseases, especially those associated with alcohol consumption. The risk of upper respiratory and digestive tract and lung cancer during follow-up was higher among nonparticipants. The same phenomenon occurred among women, but less markedly, for cancers of the breast and genital organs. During follow-up, mortality among men was higher among nonparticipants, especially for alcohol-related diseases. The association among women was less strong. Among men, but not among women, diseases caused by alcohol, smoking, or dangerous behavior were the primary reason for the health differences observed between participants and nonparticipants. Overall, the most important determinants of participation were cultural factors and lifestyle behaviors.

Absenteeism↗

Using hospital data systems to find target populations: new tools for clinical nurse specialists.

A newly appointed diabetes clinical nurse specialist/nurse practitioner at Yale-New Haven Hospital was charged with redesigning the diabetes nursing role. For help, she turned to a special information management service within the Nursing and Operational Finance departments. This article describes the project that used an integrated financial and clinical information system to locate and characterize adult patients with diabetes mellitus. Patients with principal and secondary diagnoses of diabetes were identified by ICD-9-CM codes and tracked across inpatient and outpatient services. These data were used to identify opportunities for case management and for managing the costs related to diabetes care. The data also supported proposals made by the clinical nurse specialist/nurse practitioner to management to allocate clinical resources for the care of patients with diabetes. When the clinical wisdom of advanced practice nurses is joined with nursing information management expertise and technology, opportunities for understanding and advancing nursing's work are revealed.

Adult↗

Using developmental epidemiology to choose the target population for an intervention program in a high-risk neighborhood.

Used epidemiologic techniques to evaluate the appropriate recruitment strategy for an intervention in a high-risk inner-city neighborhood. Risk factor epidemiology can play a major role in the design of community interventions by assisting in the estimation of the potential effects of different recruitment strategies. The long-term goal of this intervention program for infants and young children was to improve outcomes in elementary school. Our results indicated that that among mothers in the catchment area, the relative risks associated with levels of maternal education for high prevalence disabilities were smaller than in the whole school district. These data suggest that recruiting any mother in the catchment neighborhood would result in more individuals who could benefit from the intervention receiving services and in a larger reduction in cases of developmental problems associated with the risk factor. That is, the study sample was defined by residence in a neighborhood rather than by individual risk factors to maximize the impact on the number of cases that could be prevented.

Affective Symptoms↗

Air pollution and very low birth weight infants: a target population?

OBJECTIVE: The goal was to examine systematically the association between maternal exposure to particulate matter of <10 microm and very low birth weight (<1500 g) delivery for evidence of an effect on duration of gestation and/or intrauterine growth restriction. METHODS: This case-control study took place between April 1, 1986, and March 30, 1988, in Georgia Health Care District 9 and included 128 mothers of very low birth weight infants, all of whom were preterm and were classified as either small for gestational age or appropriate for gestational age, and 197 mothers of term, appropriate-for-gestational-age infants weighing > or = 2500 g. Maternal exposure to particulate matter of <10 microm was estimated with 2 exposure measures, namely, a county-level measure based on residence in a county with an industrial point source and an environmental transport model based on the geographic location of the birth home. RESULTS: Considering preterm/appropriate-for-gestational-age infants as cases and term/appropriate-for-gestational-age infants as controls, adjusted odds ratios for maternal exposure to particulate matter of <10 microm were statistically significant (adjusted odds ratio for county-level model: 4.31; adjusted odds ratio for environmental transport model: 3.68). Although elevated, no statistically significant association was found between maternal exposure and preterm/appropriate-for-gestational-age delivery when compared to preterm/small-for-gestational-age delivery. CONCLUSIONS: There are increased odds of maternal exposure to ambient particulate matter of <10 microm for very low birth weight preterm/appropriate-for-gestational-age delivery, compared with term/appropriate-for-gestational-age delivery, which suggests that the observed association between maternal exposure to air pollution and low infant birth weight (particularly <1500 g) is at least partially attributable to an effect on duration of gestation.

Air Pollutants↗