SENEGAL - Niakhar HDSS INDEPTH Core Dataset 1984-2014 (Release 2017)
Reference ID | INDEPTH.SN013.CMD2014.v1 |
Year | 1984 - 2014 |
Country | SENEGAL |
Producer(s) |
Cheikh SOKHNA - Institut de Recherche pour le Développement (IRD) Laurence FLEURY - Institut de Recherche pour le Développement (IRD) Valérie Delaunay - Institut de Recherche pour le Dével |
Sponsor(s) | Institut de Recherche pour le Développemt - IRD - Current funder |
Collection(s) | |
Metadata | Documentation in PDF |
Created on
Jul 01, 2017
Last modified
Jul 01, 2017
Page views
54242
Overview
Identification
INDEPTH.SN013.CMD2014.v1 |
Version
CMD2014.v1 2017-05-20
Overview
The Health and Demographic Surveillance System (HDSS) in Niakhar, a rural area of Senegal, is located 135 km east of Dakar. This HDSS has been set up in 1962 by the Institut de Recherche pour le Développement (IRD) to face the shortcomings of the civil registration system and provide demographic indicators.Some 65 villages were followed annually in the Niakhar area from 1962 to 1969. The study zone was reduced to eight villages from 1969 to 1983, and from then on the HDSS was extended to include 22 other villages, covering a total of 30 villages for a population estimated at 45,000 in December 2013. Thus 8 villages have been under demographic surveillance for almost 50 years and 30 villages for 30years.
Vital events, migrations, marital changes, pregnancies, immunization are routinely recorded (every four months). The database also includes epidemiological, economic and environmental information coming from specific surveys. Data were collected through annual rounds from 1962 to 1987; rounds became weekly from 1987 to 1997; routine visits were conducted every three months between 1997and 2007 and every four months since then.
The current objectives are 1) to obtain a long-term assessment of demographic and socio-economic indicators necessary for bio-medical and social sciences research, 2) to keep up epidemiological and environmental monitoring, 3) to provide a research platform for clinical and interdisciplinary research (medical, social and environmental sciences). Research projects during the last 5 years are listed in Table 2. The Niakhar HDSS has institutional affiliation with the Institut de Recherche pour le Développement (IRD, formerly ORSTOM).
Event history data
Individual
Scope
This study represents only a portion of the total data associated with the complet Niakhar demographic surveillance as described in the study abstract.It specifically only includes the events defining the resident exposure of individuals under surveillance as well as the delivery events of resident women. Each type of event contains minimal attributes describing the event:
Attributes common to each event:
Event Type,
Event Date
Observation date
Migration:
Origin & Destination
Delivery:
Live born and Still born counts
Topic | Vocabulary | URI |
---|---|---|
Demography [N01.224] | MeSH | http://www.ncbi.nlm.nih.gov/mesh |
Age Distribution [N01.224.033] | MeSH | http://www.ncbi.nlm.nih.gov/mesh |
Emigration and Immigration [N01.224.625.350] | MeSH | http://www.ncbi.nlm.nih.gov/mesh |
Residential Mobility [N01.224.791.700] | MeSH | http://www.ncbi.nlm.nih.gov/mesh |
Sex Distribution [N01.224.803] | MeSH | http://www.ncbi.nlm.nih.gov/mesh |
Vital Statistics [N01.224.935] | MeSH | http://www.ncbi.nlm.nih.gov/mesh |
Life Expectancy [N01.224.935.464] | MeSH | http://www.ncbi.nlm.nih.gov/mesh |
Mortality [N01.224.935.698] | MeSH | http://www.ncbi.nlm.nih.gov/mesh |
Birth Rate [N01.224.935.849.500] | MeSH | http://www.ncbi.nlm.nih.gov/mesh |
Rural Population [N01.600.725] | MeSH | http://www.ncbi.nlm.nih.gov/mesh |
Maternal Age [N06.850.490.250.550] | MeSH | http://www.ncbi.nlm.nih.gov/mesh |
Parity [N06.850.490.812.600] | MeSH | http://www.ncbi.nlm.nih.gov/mesh |
Survival Analysis [N06.850.520.830.998] | MeSH | http://www.ncbi.nlm.nih.gov/mesh |
Coverage
The study zone of Niakhar is located in Senegal, 14.5ºN Latitude and 16.5ºW Longitude in the department of Fatick (Sine-Saloum), 135 km east of Dakar. The Niakhar study zone covers 203 square kilometres and is located in the continental Sahelian-Sudanese climatic zone. For thirty years the region has suffered from drought. The average annual rainfall has decreased from 800 mm in the 1950s to 500 mm in the 1980s. Increasing amounts of precipitation have been observed since the mid-2000s with an average annual rainfall of 600 mm between 2005 and 2010. The area is 203 square kilometers.
Members of households reside within the demographic surveillance area. Inmigrants are defined by intention to become resident, but actual residence episodes of less than 180 days are censored. Outmigrants are defined by intention to become resident elsewhere, but actual periods of non-residence less than 180 days are censored, except seasonal work migrants, worker with a wife resident, pupils or students. Children born to resident women are considered resident by default, irrespective of actual place of birth.
The dataset contains the events of all individuals ever resident during the study period (1 Jan 1990 to 31 Dec 2013).
The Niakhar HDSS collects for each resident the following basic data: individual, household and compound identifying information, mother and father identification, relationship to the head of household and spousal relationship. From 1983 to 2007, the HDSS routinely monitored deaths, pregnancies, births, miscarriages, stillbirths, weaning, migrations, changes of marital status, immunizations, and cases of measles and whooping cough. For the last 5 years, the HDSS only recorded demographic events related to each resident including cause of death. Verbal autopsies have been conducted after all deaths except for those that occurred between 1999 and 2004 where only deaths for people aged 0-55 years were investigated. The Niakhar HDSS also registers visitors as well as all the demographic events related to them in case of in-migration. Household characteristics (living conditions, domestic equipment, etc.) were collected in 1998 and 2003, and community equipment (schools, boreholes, etc.) in 2003. Economic and environmental data will be collected in 2013. Table 3 presents further details on the data items collected. The Niakhar HDSS interviewers collect data with tablet PCs that are loaded with the last updated database linked to a user-friendly interface indicating the household members and the questionnaire. Daily backups are performed on an external hard drive and weekly synchronizations are scheduled during the round, helping to update the database and check data consistency (i.e. residential moves within the study area or marriages). Applications are Developed in Visual Basic.Net and the database is managed with Microsoft Access.
Producers and Sponsors
Name | Affiliation |
---|---|
Cheikh SOKHNA | Institut de Recherche pour le Développement (IRD) |
Laurence FLEURY | Institut de Recherche pour le Développement (IRD) |
Valérie Delaunay | Institut de Recherche pour le Développement (IRD) |
El-Hadji Konko Ciré Bâ | Institut de Recherche pour le Développement (IRD) |
Name | Affiliation | Role |
---|---|---|
Mouhamadou Baba SOW | Institut de Recherche pour le Développemt (IRD) | Data Manager |
Emilie VOLPI | Institut de Recherche pour le Développemt (IRD) | Data Manager |
Adiouma FAYE | Institut de Recherche pour le Développemt (IRD) | Data collector |
All staff Data Collection | Institut de Recherche pour le Développemt (IRD) | Data collectors |
Name | Abbreviation | Role |
---|---|---|
Institut de Recherche pour le Développemt | IRD | Current funder |
Name | Affiliation | Role |
---|---|---|
Paul SENGHOR | Institut de Recherche pour le Développemt (IRD) | Verbal Autopsy Interviewer |
Emilie NDIAYE | Institut de Recherche pour le Développemt (IRD) | Referencies Manager |
Prosper NDIAYE | Institut de Recherche pour le Développemt (IRD) | Administrative Manager |
Malick TOURE | Institut de Recherche pour le Développemt (IRD) | Logistics Manager |
Metadata Production
Name | Abbreviation | Affiliation | Role |
---|---|---|---|
ISHARE2Technical TEAM | isTT | INDEPTH Network | Documentation of the study |
INDEPTH Network | int.indpth | INDEPTH Network | agency |
Mouhamadou Baba SOW | MBS | Institut de Recherche pour le Développement(IRD) | Data Manager |
DDI.INDEPTH.SN013.CMD2014.v1