Table 2.

Infections based on ICD-10 codes recorded for cases and controls during the first hospital stay

Infections	Infection types (ICD-10 codes)
All	Intestinal infectious diseases (A04; A08); Tuberculosis (A15); Sepsis (A41); Erysipelas (A46); Bacterial infection of unspecified site (A49); Human immunodeficiency virus disease (B23); Cytomegaloviral disease (B25); Acute and subacute endocarditis (I33); Acute upper respiratory infections (J03; J06); Pneumonia/ other acute lower respiratory infections (J15; J18; J20; J21); Abscess of anal and rectal regions/ peritonitis (K61; K65); Infections of the skin and subcutaneous tissue (L02 – L04; L08); Infectious arthropathies (M02); Necrotizing fasciitis (M726); Osteomyelitis (M86); Acute tubulo-interstitial nephritis (N10); Urinary tract infection, site not specified (N390); Inflammatory disorders of breast/ infections of breast associated with childbirth (N61; O91) Infection following a procedure, not elsewhere classified or due to internal fixation device (T814; T846)
Infections possibly caused by S. aureus
Non-severe infections	Bacterial infection of unspecified site (A49); Acute tonsillitis, unspecified (J039); Acute upper respiratory infections of multiple and unspecified sites (J06); Abscess of anal and rectal regions (K61) Cutaneous abscess, furuncle and carbuncle (L02); Cellulitis (L03); Other local infections of skin and subcutaneous tissue, unspecified (L08); Urinary tract infection, site not specified (N390); Inflammatory disorders of breast/ Infections of breast associated with childbirth (N61; O91)
Severe infections	Other sepsis (A41); Acute and subacute endocarditis (I33); Bacterial pneumonia, unspecified (J159); Pneumonia, organism unspecified (J18); Necrotizing fasciitis (M726); Osteomyelitis (M86); Acute tubulo-interstitial nephritis (N10); Infection following a procedure, not elsewhere classified or due to internal fixation device (T814; T846)