“…The demographic and surgery-related parameters included age (years), BMI (kg/m 2 ), ASA-score (I, II, III, IV) as well as EHS classification (hernia type: medial, lateral, femoral, scrotal) and defect size: grade I = < 1.5 cm, grade II: 1.5-3 cm, grade III: > 3 cm) (21) and general risk factors (nicotine, COPD, diabetes, cortisone, immunosuppression, etc.). Risk factors were dichotomized, i.e., 'yes' if at least one risk factor is positive and 'no' otherwise.…”