Asthma Case-Control Dataset Codebook

Permanent Identifier:

https://doi.org/10.17037/DATA.00001804

Variable list

The dataset contains the variables outlined below. When making an application to access the dataset, please state the variable names in which you are interested.

Variable name Variable description Value labels
age Age at enrolment, in years 5 through 17
sex Sex 1=male, 0=female
ic_totalige Total IgE, continous (ImmunoCAP) kU/L 6.7 through 8984
ic_derpige D. pteronyssinus-specific IgE, continous (ImmunoCAP), kU/L 0.02 through 628.8
ic_cokige B. germanica-specific IgE, continous (ImmunoCAP), kU/L 0.01 through 81.8
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 )"
kasepg_m S. mansoni eggs per gram, average of 2 slides 0 through 1656
kaaepg_m Ascaris eggs per gram, average of 2 slides 0 through 996
kahepg_m Hookworm eggs per gram, average of 2 slides 0 through 840
katepg_m Trichuris eggs per gram, average of 2 slides 0 through 372
kaoepg_m 'other worm' eggs per gram, average of 2 slides 0 through 14052
kasinf S. mansoni infection status, Kato-Katz 1=infected, 0=uninfected
kaainf Ascaris infection status, Kato-Katz 1=infected, 0=uninfected
kahinf Hookworm infection status, Kato-Katz 1=infected, 0=uninfected
katinf Trichuris infection status, Kato-Katz 1=infected, 0=uninfected
kaoinf 'Other worm' infection status, Kato-Katz 1=infected, 0=uninfected
casecont Asthma case-control staus 1=asthma case, 0=non-asthma control
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)"
cokge IgE (ng/ml) to Blatella germanica, continuous (ELISA) 0.08 through 8542.12
derpge IgE (ng/ml) to D. pteronyssinus, continuous (ELISA) 0.08 through 20984.38
cokg4 IgG4 (ng/ml) to Blatella germanica (ELISA) 0.08 through 18351.56
derpg4 IgG4 (ng/ml) to D. pteronyssinus (ELISA) 0.08 through 10499.32
cokgecat German cockroach-specific IgE, categorical (ELISA) 0= undetectable IgE, 1=IgE≥312.5 ng/ml
derpgecat Dermatophagoides-specific IgE, categorical (ELISA) 0= undetectable IgE, 1=IgE≥312.5 ng/ml
anyigecat Detecatable IgE to any one of Dermatophagoides or cockroach (ELISA) 0= undetectable IgE, 1=IgE to any of cockroach or dermatophagoides ≥312.5 ng/ml
totg4 Total IgG4, continous (ELISA), ng/ml 1 through 108574.4
swa_g4 SWA-specific IgG4, ng/ml, continuous (ELISA) 0 through 839375
sea_g4 SEA-specific IgG4, ng/ml, continuous (ELISA) 0 through 839375
sea_ige SEA-specific IgE, ng/ml, continuous (ELISA) 0 through 41968.8
swa_ige SWA-specific IgE, ng/ml, continuous (ELISA) 0 through 11786.3
swa_igg SWA-specific IgG, ng/ml, continuous (ELISA) 176100 through 5070552
sea_igg SEA-specific IgG, ng/ml, continuous (ELISA) 350724 through 7799214
anynema Any nematode infection (KK + PCR) 1=infected with any of Ascaris, hookworm, Strongyloides or trichuris; 0=uninfected
log_cokg4 Log10 IgG4 to cockroach (ng/ml+1) 0.03 through 4.26
log_derpg4 Log10 IgG4 to D. pteronyssinus (ng/ml+1) 0.03 through 4.02
log_cokge Log10 IgE to cockroach (ng/ml+1) - ELISA 0.03 through 3.93
log_derpge Log10 IgE to D. pteronyssinus (ng/ml+1) - ELISA 0.03 through 4.32
cok4ER Cockroach IgG4/IgE ratio, ELISA 0 through 173813.5
derp4ER Dermatophagoides IgG4/IgE ratio, ELISA 0 through 123283
log_cok4ER Log10 Cockroach IgG4/IgE ratio (+1), ELISA 7.91e^-6 through 5.24
log_derp4ER Log10 Dermatphagoides IgG4/IgE ratio (+1), ELISA 6.02e^-6 through 5.09
log_totg4 Log10 total IgG4 (ng/ml+1), ELISA 0 through 5.04
log_totge Log10 total IgE (kU/L), ImmunoCAP 0.82 through 3.95
g4gER Total IgG4/ total IgE ratio 0 through 6176.5
lg4gER Log10 Total IgG4/ total IgE ratio (+1) 0 through 3.79
cokR Total IgE/cockroach-specific IgE ratio, ImmunoCAP 15.27 through 31400.2
derpR Total IgE/Dermatophagoides-specific IgE ratio, ImmunoCAP 2.6 through 25730.7
log_cokR Log10 Total IgE/cockroach-specific IgE ratio (+1) 1.21 through 4.49
log_derpR Log10 Total IgE/Dermatophagoides-specific IgE ratio (+1) 0.56 through 4.41
logswa_ige log10 IgE to SWA (ng/ml+1), ELISA 0 through 4.07
logsea_ige log10 IgE to SEA (ng/ml+1), ELISA 0 through 4.62
logsea_g4 log10 IgG4 to SEA (ng/ml+1), ELISA 0 through 5.92
logswa_g4 log10 IgG4 to SWA (ng/ml+1), ELISA 0 through 5.92
lderpige_cap Log10 IgE to D. pteronyssinus (kU/L+0.001) - ImmunoCAP -1.72 through 2.79
lcokige_cap Log10 IgE to cockroach (kU/L+0.001) - ImmunoCAP -1.91 through 1.91