SONA project - Asthma risk factors data - Codebook

Permanent Identifier:

https://doi.org/10.17037/DATA.00001369

Data Description

Dataset produced as part of a case-control study to investigate asthma risk factors among schoolchildren in urban Uganda. Each row represents one child. Variables include data on case-control status and risk factors (parental, early-life and current).

SONA project - Asthma risk factors data codebook

Variable name Variable description Value labels
age Age at enrolment, in years 5 through 17
sex Sex 1=male, 2=female
idno Unique identifier 1 through 562, then 1001 through 2141 
kasinf Schistosoma mansoni infection status at enrolment  1=infected, 0=uninfected
kaainf  Ascaris lumbricoides infection status at enrolment  1=infected, 0=uninfected
kahinf Hookworm infection status at enrolment  1=infected, 0=uninfected
katinf  Trichuris trichuria infection status at enrolment  1=infected, 0=uninfected
kaoinf Other helminths infection status at enrolment  1=infected, 0=uninfected
anyhelm Any helminth infection at enrolment 1=infected, 0=uninfected
casecont  Asthma case-control staus 1=asthma case, 0=non-asthma control
bcgcat  Presence of BCG scar 1=yes, 0=no
fenocat  Fractional exhaled nitric oxide (FENO) 0="<35 parts per billion", 1=">=35 parts per billion"
blomcat Skin prick test response to Blomia tropicalis (dust mite) 0="negative (<3mm wheal diameter)", 1=positive (>=3mm wheal diameter)"
dermcat  Skin prick test response to Dermatophagoides mix (dust mites) 0="negative (<3mm wheal diameter)", 1=positive (>=3mm wheal diameter)"
cockcat  Skin prick test response to German cockroach 0="negative (<3mm wheal diameter)", 1=positive (>=3mm wheal diameter)"
catcat  Skin prick test response to cat 0="negative (<3mm wheal diameter)", 1=positive (>=3mm wheal diameter)"
mouldcat  Skin prick test response to moulds mix 0="negative (<3mm wheal diameter)", 1=positive (>=3mm wheal diameter)"
pollcat  Skin prick test response to pollen mix 0="negative (<3mm wheal diameter)", 1=positive (>=3mm wheal diameter)"
peacat Skin prick test response to peanut 0="negative (<3mm wheal diameter)", 1=positive (>=3mm wheal diameter)"
atopyspt Skin prick test response to any of 7 allergens 0="negative (<3mm wheal diameter)", 1=positive (>=3mm wheal diameter)"
alb12cat  Reported albendazole use in last 12 months 0=none, 1=yes
praz12cat Reported praziquantel use in last 12 months 0=none, 1=yes
wormrx12  Reported frequency of deworming in last 12 months 0=None, 1=once, 2=twice
feduc  Father's highest education attained 0=none/primary, 1=secondary, 2=tertiary
meduc Mother's highest education attained 0=none/primary, 1=secondary, 2=tertiary
icokcat3 Most frequent fuel used for indoor cooking 0=no indoor cooking, 1=charcoal stove, 2=Gas/electricity
tstcat Tuberculin skin test size of induration 0="negative (<10mm diameter)", 1=positive (>=10mm diameter)"
hoinose  Allergic rhinitis symptoms, ever 1=yes, 0=no
curinose  Allergic rhinitis symptoms, last 12 months 1=yes, 0=no
hoieyes Allergic conjunctivitis symptoms, ever 1=yes, 0=no
curieyes  Allergic conjunctivitis symptoms, last 12 months 1=yes, 0=no
hoecz  Eczema symptoms, ever 1=yes, 0=no
curecz  Eczema symptoms, last 12 months 1=yes, 0=no
hourt  Urticarial rashes, ever 1=yes, 0=no
cururt Urticarial rashes, last 12 months 1=yes, 0=no
excewhocat  Child engaged in physical exercise as recommended by WHO 1=yes, 0=no
fastcat  Father's history of asthma 1=yes, 0=no
mastcat Mother's history of asthma 1=yes, 0=no
truckcat  Frequency of 'Trucks passing on road near home', currently 0=rarely, 1=frequently, 2=almost all day
bfcat1  Breast feeding duration 0="less than or 1 year", 1="more than 1 year"
smokepcat1  Maternal cigarette smoking during pregnancy 1=yes, 0=no
anipcat1  Maternal regular contact with farm animals during pregnancy  1=yes, 0=no
cursmoke  Current exposure to cigarette smoke by a household member 1=yes, 0=no
vilbcat2  Area of residence at birth 0=rural, 1=town, 2=city
vil5cat2  Area of residence, first 5 years of life 0=rural, 1=town, 2=city
migrate  Migration between area at birth and first 5 years of life 0=stayed rural, 1=stayed urban, 2=moved rural to urban, 3=moved urban to rural
ic_totalige  Total IgE, continous (ImmunoCAP) kU/L 0=non-atopic IgE level, "<0.35kUA/L (allergen-specific kilo units per litre)", 1=Atopic IgE level "(>=0.35kUA/L )"
ic_pnt_atopy  Sensitisation to peanut, categorical (ImmunoCAP) 0=non-atopic IgE level, "<0.35kUA/L (allergen-specific kilo units per litre)", 1=Atopic IgE level "(>=0.35kUA/L )"
ic_cok_atopy  Sensitisation to German cockroach categorical (ImmunoCAP) 0=non-atopic IgE level, "<0.35kUA/L (allergen-specific kilo units per litre)", 1=Atopic IgE level "(>=0.35kUA/L )"
ic_der_atopy Sensitisation to dermatophagoides, categorical (ImmunoCAP) 0=non-atopic IgE level, "<0.35kUA/L (allergen-specific kilo units per litre)", 1=Atopic IgE level "(>=0.35kUA/L )"
ic_any_atopy Sensitisation to any of 3 allergens, categorical (ImmunoCAP) 0=non-atopic IgE level, "<0.35kUA/L (allergen-specific kilo units per litre)", 1=Atopic IgE level "(>=0.35kUA/L )"
anyperoallergycat  Any parent with a history of allergy, binary category  1=yes, 0=no
peroallergycat  Any parent with a history of allergy, four categories  0=Neither parent, 1=Mother only, 2=Father only, 3=Both parents
peroallergyatopy Parental history of allergy and child's atopy, combined category 0=No parental allergy,child non-atopic, 1=No parental allergy, child atopic, 2=Yes to parental allergy, child non-atopic, 3= Yes to parental allergy and child atopic
bornatopy  Child's residence at birth and atopy, combined category 0=Rural & non-atopic, 1=Town & non-atopic, 2=City & non-atopic, 3=Rural & atopic, 4=Town & atopic, 5=City & atopic
peroallergyborn  Child's residence at birth and parental allergy, combined category 0=Rural & no parental allergy, 1=Town & no parental allergy, 2=City & no parental allergy, 3=Rural & parental allergy, 4=Town & parental allergy, 5=City & parental allergy
feducborn  Father's education & Child's residence at birth, combined category 0=Primary & Rural, 1=Primary & Town, 2=Primary & City, 3=Secondary & Rural, 4=Secondary & Town, 5=Secondary & City, 6=Tertiary & Rural, 7=Tertiary & Town, 8=Tertiary & City
meducborn  Mother's education & Child's residence at birth, combined category 0=Primary & Rural, 1=Primary & Town, 2=Primary & City, 3=Secondary & Rural, 4=Secondary & Town, 5=Secondary & City, 6=Tertiary & Rural, 7=Tertiary & Town, 8=Tertiary & City
sch_code School code 1 through 48