|Community-Based Longitudinal Nutrition and Health Studies : Classical Examples from Guatemala, Haiti and Mexico (International Nutrition Foundation for Developing Countries - INFDC, 1995, 184 pages)|
|5. A prospective study of community health and nutrition in rural Haiti from 1968 to 1993|
All projects found that rural Haitian families respond well to the use of resident home-health visitors and their volunteer assistants, who are often women. The latter have helped to report vital events and assisted their neighbors to go to neighborhood posts-de-rassemblement (assembly points or rally posts) for immunization, growth monitoring/counseling, and family planning. Outreach teams from nearby health centers provide technical support to back up village workers who help carry out a census and/or enroll families in the community health program. After door-to-door registration of families, the resident home visitors derived rosters of children under five and of women in the reproductive age group for follow-up. Vital event reporting permitted the use of indicators such as birth rates, age-specific fertility rates, and age-specific, cause-specific death rates, as well as certain morbidity indicators.
Common to the projects reviewed here are underlying concepts; the
most important is that the family is the key primary health care provider or
enabler, and health workers are their trainers.
Other common concepts were:
a. Equitable distribution of preventive health services (through community registration of families or households; no one is left out);
b. Community involvement with services offered through locally recruited and trained resident home visitors (RHVs), or family workers;
c. The need for ongoing health and nutrition surveillance activities and preventive services at the community level (for example, community-based distribution of contraceptives in the PISP project; periodic deworming and vitamin A distribution in others);
d. Use of vital event reporting and reporting on nutritional status of children as a part of an emerging "management information system" (for example, data such as birth rates and age-specific, cause-specific death rates were used for community diagnosis and for decision making);
e. The need for continuing community participation in the primary health care system, with feedback to the community from the information system;
f. Use of an itinerant technical support team to assist community workers in the delivery of key preventive services, such as immunization, and growth monitoring as close to homes of villagers as possible;
g. The need for education of families and traditional birth attendants in appropriate early referral for illness or complications of childbirth.
Both HAS and the PVS/Cange programs have the advantage of an excellent curative institution nearby. The PISP project relied on an under equipped government hospital with erratic services at the time (for example, lack of 24-hour-a-day coverage for emergency illnesses or conditions). Reliable services for early referral of ill persons emerged as a key concept for the more successful of the projects.
Paid full-time or part-time community health workers or RHVs, often called Agents de Santé in Haiti, acted as family educators and as reporters, assisted by local volunteer community health assistants and/or women's groups or their supervisors. These workers were recruited, trained, and supervised locally by technical support teams of health professionals at nearby institutions.
Through their home visits and work with community leaders, the RHVs were able to implement community-based health rallies where preventive activities could occur. Attendance at the monthly or bimonthly community-based sessions was enhanced by offering services near the homes of mothers, who rarely will walk more than one hour for preventive services (Alvarez et al., 1993). Other enhancements included the addition of simple first aid or beginning curative care for ill children, the provision of free worm medicine, and the availability of vitamin A supplements.
In addition to vital event reporting and nutrition surveillance, RHVs focused on training families in the following activities:
a. Use of oral rehydration therapy (ORT);
b. Seeing that children are breast-fed, immunized, and attending nutrition monitoring/counseling (including vitamin A supplementation in more recent programs);
c. Finding contraceptive services;
d. Finding primary health care facilities in cases of respiratory infections or febrile illness.
Mothers under surveillance were asked to participate in growth monitoring/counseling; to prolong breast-feeding; to use trained birth attendants; to take advantage of maternal health services such as family planning, antenatal care, and postnatal care; to use project-trained traditional birth attendants; and to adopt behaviors to prevent AIDS.
The overall strategy differs little among programs. The following steps, or modifications of them, were considered necessary by all of them:
1. Map out defined communities to be served, with community participation in planning for house numbering and door-to-door registration of families so that no family is left out (a concern for equity);
2. Identify, recruit, and train community health workers, ideally RHVs and local assistant workers (including volunteers) who will participate in activities such as teaching mothers and inviting mothers and children to assembly points or "rally posts" for preventive services and some curative services;
3. Implement an information system with appropriate indicators so that impact evaluation is possible:a. Derive rosters from the family register or "census" instruments, for example, community-based rosters of names of children under five or under three years old (one roster for every 20-30 families) so that health workers (one worker for every 30-100 families) can record serially the weight/age and immunization status for each child he or she follows through assembly post activities;
b. Create and test or adopt report forms (for example, government immunization report forms, and pregnancy, birth, and death report forms for the local program);
c. Create, test, or adapt home-based, hand-held record forms to be carried by mothers (such as vaccination cards), Road-to-Health weight/age growth monitoring graphs, and maternal health records;
d. Train health workers in the use of these appropriate instruments;
e. Train supervisors in the use and creation of instruments for aggregation of data for feedback to communities and for reporting onward those data needed by program or project managers.
4. Train health workers at all levels to help set up "stations" for assembly posts at the community level (a station for immunizations and vitamin A distribution, a station for weighing children, a separate station for counseling the mother with participatory interpretation of the Road-to-Health weight/age graph, one for family planning counseling, etc.);
5. Train itinerant technical support teams to arrive monthly, bimonthly, or quarterly at the village level to carry out primary health care and nutrition monitoring activities according to a respected appointed schedule with an early-in-the-day arrival (rural Haitians arise at dawn or before, and prefer community-based activities very early or late in the day);
6. Inform community leaders and mothers of the purpose of the program and the date, time, and place of assembly points, often by a personal home visit on the eve of the activity;
7. Plan for absentee follow-up, sometimes during the activity or immediately thereafter (volunteers often did this);
8. Implement immediate vital event reporting in at least one defined project area to provide impact indicators. The absence of a supervised civil registration system in Haiti and the need to report vital events on a carefully defined local population necessitated this activity.
To explore whether good results could be expected if this kind of community health approach were to be undertaken by a government institution, the Haitian Ministry of Health Division of Family Hygiene in the PISP project, replicated and improved child survival and fertility control activities in defined communities near Petit Goave in 1974- 1978. Assisted by the Department of Population Sciences of the Harvard School of Public Health and the Haitian Institute of Statistics, prospective longitudinal reporting of pregnancies, births, and deaths was carried out in three "census tracts"; a nonintervened population was studied for comparison purposes.
In the PISP and HAS projects, all data on migrations were coded and computerized for further analysis and interpretation. Types of data available included a record of demographic variables and reasons for migration for all persons classified as immigrants, emigrants, or transfers within the census tract.
Rupture of the nuclear family during a move was a special concern to the investigators because of health and nutrition consequences. In the first HAS study all migrants and transfers were classified as "moving alone" or moving as a part of a family group. Reasons for migration as well as new and old addresses were also noted. The PISP study also noted whether any conjugal union had dissolved and whether any children under five had been separated from their biologic mothers as a result of the move.
Nutrition Monitoring and intervention
Rural Haitians tend to appear thin, reflecting their scant diets of rice, corn, cassava, or millet with a few beans, served once or twice daily. Most families can afford animal protein once a week at best; some have meat only once a month. The average daily calorie intake has been estimated as between 1,200 and 1,700 calories per day, with carbohydrates forming 72% of the daily intake (Haiti Bureau of Nutrition, 1979). Children suffer most, especially toddlers who cannot be expected to consume their daily calorie requirement at one sitting. Once weaned from the breast, however uneducated mothers will expect a child to do so (Beghin et al., 1970).
Because Haitian children under five have been and remain the most malnourished in the Western Hemisphere (UNICEF, 1990), special nutrition activities characterize these projects. During the 1970s and into the 1980s, rural nutrition surveys revealed that 3% to 6% of preschool children suffered Gomez third-degree malnutrition, that is, with weight/ age measurements less than 60% of the international standard median (Haiti Bureau of Nutrition, 1979). By 1992, data for sentinel surveillance areas set up by USAID still showed that 3% of Haitian children fell into the category of third-degree malnutrition (USAID, 1992, 1993).
Growth monitoring and reporting on nutrition status was a part of the nutrition surveillance system for all children in the HAS program and the PISP project. At HAS this included weight/height/age measurements monthly on more than 80% of census tract children. The Road-to-Health weight/age growth record was used to educate mothers in all projects at monthly, bimonthly, or (in the case of the PISP project) quarterly assembly posts, where immunizations, family planning, and health education were carried out.
Growth monitoring and nutrition surveillance and intervention activities were based on the following premises:
a. Rural Haitian mothers, although illiterate, can and will retain and interpret home-based growth charts on their children;
b. Nutrition demonstration-education involving the mother in food preparation and in feeding and rehabilitating her child is superior to counseling alone;
c. Continuing surveillance activities with periodic deworming and vitamin A distribution are appreciated by rural families, who will continue to participate as long as there is an outreach program that provides simple services within easy walking distance of their homes.
In 1968 the HAS community health program adopted a plan for nutrition intervention based on the experience of the Haitian Bureau of Nutrition, a part of the Ministry of Health of Haiti at the time. This was the use of village-level "centers" (temporarily rented homes) where a trained nutrition aide would teach mothers to rehabilitate their own malnourished tots using locally available, inexpensive foods. These nutrition rehabilitation and education centers or "mothercraft centers" lasted three months for each "promotion" of about 20 to 30 children and their mothers from a nearby neighborhood. The women nutrition aides, known as monitrices, moved with their center equipment in an itinerant manner across the HAS district, targeting those communities where the data from the growth monitoring indicated an acute need. Local farmers and their wives cooperated in making a home available for the demonstration and in observing the changes in the malnourished children. For the first time, mothers were shown the recuperation of children from kwashiorkor and marasmus by the use of inexpensive foods rather than treatment by medications received in hospital or clinic settings. Teaching emphasized the use of an inexpensive, locally available mixture known as akamil (one-third beans and two-thirds corn), which had an excellent amino acid ratio (King, 1964).
For HAS, this was a contrast to the traditional approach in which children were hospitalized, tube fed, and rehabilitated with imported products in a setting where cross-infection rates were high. Using the mothercraft centers in an itinerant manner across the HAS catchment area resulted in a significant decrease in the number of children requiring hospitalization for severe marasmus or kwashiorkor and was cost-effective (King et al. 1978). The PISP project in the Petit Goave area developed a less expensive modification of the mothercraft centers known as Foyers de Demonstration en Nutrition or nutrition demonstration centers, introduced in the context of the nutrition monitoring program, in which each mother was trained to follow the growth of her child on a home-based weight/age graph. The foyers lasted only two weeks in a village and took place in the borrowed kitchen or foyer of a volunteer mother who was a participant in the training exercise, whether or not her own child was malnourished. In this modification, the malnourished child was not completely rehabilitated but only began the process. The monitrice who conducted the training sessions met with villagers before, during, and after the demonstration to encourage completion of the rehabilitation process for each child in question.
The adverse nutritional consequences to children in unstable family situations were documented. Fostering of nonbiologic children is not uncommon in rural Haiti, especially in the face of dissolving conjugal unions. Children who were moved from one family to another in child-sharing practices typical of rural Haiti were followed prospectively to detect changes in nutritional status and survival.
Family Planning and Community-Based Distribution of Contraceptives
Although HAS was one of the first institutions in Haiti to introduce family planning, the program remained hospital- or dispensary-based until the recent AIDS epidemic (G Berggren et al, 1974). By contrast, door-to-door community-based distribution of contraceptives was an active part of the PISP project in the Petit Goave area as a part of its activities under Haiti's Division de Hygiene Familiale. The success of this approach was a harbinger of the community-based distribution projects introduced more widely in Haiti and elsewhere. The door-to-door activities of local volunteers (collaborateurs volontaires) who were part of the surveillance system enabled contraceptives to be made available at the community level. Over a three-year period, a crude birth rate of over 40/1 ,000/year came down to 37/1,000 with a concomitant high acceptance rate of condoms and pills. Many women also expressed their interest in the possibility of an injectable contraceptive (Paisible and Berggren, 1984).
The SCF/Maissade project, serving a very conservative rural population, has seen less success with community-based distribution activities but has found an apparently increasing interest and use of progestational implants (Norplant).
Tuberculosis and AIDS
Longitudinal death reporting revealed that tuberculosis was among the 10 leading causes of death in the HAS census tract in 1968; HAS studies in the Artibonite Valley in 1969 included a tuberculosis survey of the total population living in 23 villages near Deschapelles (see Results). Community-based activities included home visits, distribution of medication, and follow-up for compliance. A study carried out by PVS showed 2.4% active tuberculosis in the Cange census tract, including pediatric cases (Farmer et al., 1991). The PVS project included free tuberculosis drugs with or without financial aid.
Funding did not permit such a study by the PISP personnel in the Petit Goave area. However, tuberculosis emerged as a major cause of death in adults and therefore became a concern. All deaths were reported by cause using verbal autopsy methods. Those thought to be caused by tuberculosis were investigated by physicians who had access to the records of a tuberculosis treatment project in the area, funded in part by the International Child Care Foundation and Grace Children's Hospital for tuberculosis in Haiti.
Evolution of the Information System
All vital events were reported by RHVs, who discovered the vital event through home visits, "roll calls" of children under five or mothers at rally posts, or annual census updates. In the HAS studies, all deaths were investigated by physicians or their trained assistants; often an accompanying clinic or hospital record revealed the most likely cause of death. If not, physicians carried out informal verbal autopsies. At HAS they examined the cadaver, and in some cases convinced families to bring the body to the hospital morgue for autopsy in order better to determine the cause of death. Births were recorded by the RHVs, who contacted trained traditional birth attendants in each neighborhood.
The mobility of rural Haitian families posed a special problem, not only from the point of view of documenting vital rates, but also for follow-up purposes. Haitian conjugal unions are very unstable (Williams et al., 1975; Allman and May, 1979; ); their dissolution is often followed by in- or out-migration from a given census tract. The HAS definition of a resident was a person who resided at least six continuous months in the census tract, with intent to stay. The PISP project required that a resident be present four months or more with intent to stay before their vital event could be counted. Thus, vital events of visitors and transients were eliminated from the final analyses.