SENEGAL - Niakhar HDSS INDEPTH Core Dataset 1984-2016 (Release 2018)

SENEGAL Niakhar HDSS INDEPTH Core Dataset 1984-2016 (Release 2018)

Données récapitulatives du HDSS de Niakhar par l'INDEPTH 1984-2016 (Version 2018)

Demographic Surveillance This dataset contains rounds 1 to 18 of demographic surveillance data covering the period from 1 Jan 2008 to 31 December 2016.

An initial baseline census was carried out in 1962 for 8 villages, followed by another one in 1983 when the study area of Niakhar was expanded. From 1962 to 1987, data were collected through annual rounds during the dry season. Demographic events were collected by interviewers using a printed list of compound residents with their characteristics. From 1987 to 1997, rounds became weekly because of the need for continuous birth registration for vaccine trials. Annual censuses were carried out to check data collection, particularly relative to in- and out-migration. Routine visits were conducted in the 30 villages of the study area every three months between 1997and 2007 and every four months between 2008 and 2012 and every six month since then. Interviews are conducted with tablet PC since 2007. Verbal autopsies are completed after each round by trained personnel.

ID Number INDEPTH.SN013.CMD2016.v1

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

Migration, Mortality, Fertility, Population 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 2016).

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.

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

2018-05-25 SN013.CMD2016.v1 (May 2018)

DDI.INDEPTH.SN013.CMD2016.v1