Asymptomatic infection and family contact patterns in households of Ebola Virus Disease survivors, Sierra Leone 2015 – Data Codebook

Persistent Identifier

10.17037/DATA.41

Description

The data set contains information on 937 people (living and dead) who were resident in the households of people who survived Ebola Virus Disease (EVD) in the Kerry Town Ebola Treatment Centre in Western Area Province, Sierra Leone, during the 2014-2016 epidemic. It includes individual and household characteristics, information on exposure levels, symptoms experienced by individuals during the period when the household was affected by EVD, outcomes, possible routes of transmission, and ELISA results from antibody testing for Ebola IgG in oral fluid. Survivor households were chosen because they were more easily contactable through the Save the Children survivors outreach programme: 123 of 152 survivors and their households were interviewed.

Data Codebook

Two data sets are contained in the collection.

  1. The ‘sl_ebola_repos_NO_LAB’ dataset contains 46 variables comprising individual and household characteristics, exposure levels, symptoms, outcomes and possible sources of transmission for 937 members of the households of 123 EVD survivors from the Kerry Town Ebola Treatment Centre, Western Area Province, Sierra Leone. It does not contain serological variables.
  2. The ‘sl_ebola_repos_ALL_VAR’ dataset contains 53 variables comprising individual and household characteristics, exposure levels, symptoms, outcomes and possible sources of transmission, and laboratory results from ELISA antibody testing for Ebola IgG for 937 members of the households of 123 EVD survivors from the Kerry Town Ebola Treatment Centre. Contain serological variables.

Data access conditions

The study collected participant identifiable information that was used for analysis purposes. Direct identifiers have been removed. However, a small number of measurements may be used to identify participants in combination with other information.

Researchers wishing to access data should complete an application form and submit it to the corresponding author (Judith R. Glynn), indicating the intended research and variables in which they are interested. The list will be assessed to ensure they do not contain information may be used to identify participants.

sl_ebola_repos_NO_LAB

The following variables are contained in the sl_ebola_repos_NO_LAB data

Variable Name Variable Label Answer Label Answer Code Variable Type
particid participant ID Open ended   Numeric
hhid Household ID Open ended   Numeric
relatto Person related to (ref to relat) Open ended   Numeric
relat Person's relationship to another HH member (relatto)     Numeric
    Wife 0  
    Husband 1  
    Parent 2  
    Child of 3  
    Sibling 4  
    Aunt/Uncle 5  
    Grandparent 6  
    Grandchild 7  
    Neice/nephew 8  
    Other fam/friend 9  
ageall Participant age (in years & months) Open ended   Numeric
sex Participant sex     Numeric
    Female 0  
    Male 1  
occup1 Occupation     Numeric
    Unemployed/retired 0  
    Healthcare worker 1  
    TradHW/healer/herbalist 2  
    Ebola Intervention 3  
    Driver 4  
    Teacher 5  
    Farmer/fisherman 6  
    Labourer/mechanic etc 7  
    Trader/tailor/hairdresser/police 8  
    Business/office 9  
    Housewife/cleaner 10  
    Child/Student 11  
    Religious leader/chief 12  
    Other 13  
    unknown 99  
oral Oral fluid sample collected     Numeric
    No 1  
    Yes 2  
frontline frontline worker     Numeric
    No 0  
    Yes 1  
outcome Outcomes (b4 IgG results)     Numeric
    HH member 0  
    Survivor KT 1  
    Survivor Other 2  
    Death prob. EVD 3  
    Death EVD 4  
    Death unknown cause 5  
fatig Fatigue body weakness     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
headache Headache     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
lossappeti Loss of appetite     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
nv Nausea-vomiting     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
abpain Abdominal pain     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
dd Diarrhoea     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
blstool Blood in stool     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
mjpain Muscle joint pain     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
sore Sore throat pain swalloowing     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
hiccups Hiccups     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
redeye Red eyes     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
blurry Blurry vision     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
blgum Bleeding gums     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
miscarry Miscarriage     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
hhcon Within household contact level Open ended   Numeric
extcon External contact level Open ended   Numeric
place Rural or Urban location     Numeric
    r 0  
    u 1  
rooms Number of rooms in residence Open ended   Numeric
adults Number adult in household Open ended   Numeric
child Number of children in household Open ended   Numeric
water Access to water     Numeric
    Very limited 0  
    Sometimes 1  
    Most days 2  
    Everyday 3  
soap Access to soap     Numeric
    Very limited 0  
    Sometimes 1  
    Most days 2  
    Everyday 3  
latrine Latrine access     Numeric
    None 0  
    Shared 1  
    Household's own 2  
quaran Quarantined     Numeric
    Don't know (dk) 0  
    No 1  
    Yes 2  
ivdate Date of interview DD/MM/YYYY   Date
bleed Any bleeding symptoms     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
agenewyears Age(y) at time of Ebola Open ended   Numeric
agecat9 Age in 9 categories     Numeric
    <2 0  
    2-4 1  
    5-9 2  
    10-14 3  
    15-19 4  
    20-29 5  
    30-39 6  
    40-49 7  
    >50 8  
fup Follow-up time in days based on survivor ETC adm date Open ended   Numeric
hhheb Household head during Ebola period     Numeric
    Yes 1  
    No 2  
from1 1st possible source Open ended   Numeric
from2 2nd possible source Open ended   Numeric
from3 3rd possible source Open ended   Numeric
coprim Co-primary     Numeric
    No 0  
    Yes 1  
diedh Location of death     Numeric
    asymp 1  
    Died away from home 2  
    Survivor 3  
    Symptomatic 4  
    Died location unknown 5  
    died at home 6  
primary Primary     Numeric
    subsequent 0  
    primary 1  

sl_ebola_repos_ALL_VAR

The following variables are contained in the sl_ebola_repos_ALL_VAR dataset.

Variable Name Variable Label Answer Label Answer Code Variable Type
particid participant ID Open ended   Numeric
ratio1 1st ELISA IgG result as ratio of optical density/mean kit neg +0.1 Open ended   Numeric
ratio2 2nd ELISA IgG result as ratio of optical density/mean kit neg +0.1 Open ended   Numeric
ratio3 3rd ELISA IgG result as ratio of optical density/mean kit neg +0.1 Open ended   Numeric
ratio4 4th ELISA IgG result as ratio of optical density/mean kit neg +0.1 Open ended   Numeric
hhid Household ID Open ended   Numeric
relatto Person related to (ref to relat) Open ended   Numeric
relat Person's relationship to another household member (relatto)     Numeric
    Wife 0  
    Husband 1  
    Parent 2  
    Child of 3  
    Sibling 4  
    Aunt/Uncle 5  
    Grandparent 6  
    Grandchild 7  
    Neice/nephew 8  
    Other fam/friend 9  
ageall Participant age in years and months Open ended   Numeric
sex Participant sex (female/male)     Numeric
    f 0  
    m 1  
occup1 Participant occupation     Numeric
    Unemployed/retired 0  
    Healthcare worker 1  
    TradHW/healer/herbalist 2  
    Ebola Intervention 3  
    Driver 4  
    Teacher 5  
    Farmer/fisherman 6  
    Labourer/mechanic etc 7  
    Trader/tailor/hairdresser/police 8  
    Business/office 9  
    Housewife/cleaner 10  
    Child/Student 11  
    Religious leader/chief 12  
    Other 13  
    unknown 99  
oral Oral fluid sample collected     Numeric
    n 1  
    y 2  
frontline Frontline worker     Numeric
    No 0  
    Yes 1  
outcome Outcomes (b4 IgG results)     Numeric
    HH member 0  
    Survivor KT 1  
    Survivor Other 2  
    Death prob. EVD 3  
    Death EVD 4  
    Death unknown cause 5  
fatig Fatigue body weakness     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
headache Headache     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
lossappeti Loss of appetite     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
nv Nausea-vomiting     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
abpain Abdominal pain     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
dd Diarrhoea     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
blstool Blood in stool     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
mjpain Muscle joint pain     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
sore Sore throat pain swalloowing     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
hiccups Hiccups     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
redeye Red eyes     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
blurry Blurry vision     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
blgum Bleeding gums     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
miscarry Miscarriage     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
hhcon Within household contact level Open ended   Numeric
extcon External contact level Open ended   Numeric
place Urban or rural location     Numeric
    r 0  
    u 1  
rooms Number of rooms in residence Open ended   Numeric
adults Number of adult in household Open ended   Numeric
child Number of children in household Open ended   Numeric
water Access to water     Numeric
    Very limited 0  
    Sometimes 1  
    Most days 2  
    Everyday 3  
soap Access to soap     Numeric
    Very limited 0  
    Sometimes 1  
    Most days 2  
    Everyday 3  
latrine Latrine access     Numeric
    None 0  
    Shared 1  
    Household's own 2  
quaran Quarantined     Numeric
    dk 0  
    no 1  
    yes 2  
ivdate Date of interview DD/MM/YYYY   Date
bleed Any bleeding symptoms     Numeric
    No 0  
    Yes 1  
    Not recorded .a  
agenewyears Age(y) at time of Ebola Open ended   Numeric
agecat9 Age in 9 categories     Numeric
    <2 0  
    2-4 1  
    5-9 2  
    10-14 3  
    15-19 4  
    20-29 5  
    30-39 6  
    40-49 7  
    >50 8  
fup Follow-up time in days based on survivor ETC adm date Open ended   Numeric
status Ebola status using ELISA results     Numeric
    Indet 0  
    Negx1 1  
    Neg(min2x) 2  
    Posx1 3  
    Pos(min2x) 4  
confirmed Infection confirmed by ELISA y/n     Numeric
    neg/unconfirmed 0  
    Posx2 1  
hhheb Household head during Ebola period     Numeric
    Yes 1  
    No 2  
from1 1st possible source Open ended   Numeric
from2 2nd possible source Open ended   Numeric
from3 3rd possible source Open ended   Numeric
coprim Co-primary     Numeric
    No 0  
    Yes 1  
wetdry Type of symptoms in the home in cases     Numeric
    asymp 1  
    dry 2  
    unknown 3  
    wet 4  
diedh Location of death     Numeric
    asymp 1  
    died away from home 2  
    survivor 3  
    symptomatic 4  
    died location unknown 5  
    died at home 6  
primary Primary (y/n)     Numeric
    subsequent 0  
    primary 1