impetigo: A pyoderma consisting of three forms of skin lesions having either a thick, adherent, recurrent, dirty yellow crust with an erythematous margin (common or superficial impetigo) or lessions which are superficial, thin-walled, and bullous as found in bullous impetigo. The lesions in bullous (staphylococcal) impetigo, which are always caused by S aureus, are superficial, thin-walled, and bullous.

Endpoint definition

FinnGen phenotype data

429209 individuals

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Apply sex-specific rule None


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Check conditions None


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Check pre-conditions, main-only, mode, registry filters

Hospital Discharge: ICD-10 L01
Hospital discharge: ICD-9 684
Hospital discharge: ICD-8 684|70708
Cause of death: ICD-10 L01
Cause of death: ICD-9 684
Cause of death: ICD-8 684|70708

2 out of 7 registries used, show all original rules.


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Check minimum number of events None


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Include endpoints None


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Remove individuals based on genotype QC


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Control definitions

Control exclude L12_INFECT_SKIN

Extra metadata

Level in the ICD hierarchy 3
First used in FinnGen datafreeze DF2
Parent code in ICD-10 L00-L08
Name in latin Impetigo

Summary Statistics

Key figures

All Female Male
Number of individuals 1343 763 580
Unadjusted prevalence (%) 0.33 0.33 0.32
Mean age at first event (years) 29.69 28.78 30.89


Follow-up Absolute risk HR [95% CI] p N
1998–2019 0.06 3.03 [1.95, 4.71] 7.7e-7 96
15 years 0.01 1.47 [0.89, 2.43] 1.4e-1 29
5 years 0.00 3.23 [1.80, 5.80] 8.7e-5 24
1 year 0.00 15.90 [8.38, 30.19] 2.7e-17 25

Age distribution of first events

Year distribution of first events

Cumulative Incidence


Index endpoint: L12_IMPETIGO – Impetigo
GWS hits:

Survival analyses between endpoints


before Impetigo
after Impetigo

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Drugs most likely to be purchased after Impetigo

Endpoint not on priority list, no data to show.