(A) Hazard ratios (HR) and 95% confidence intervals (95% CI) for antibiotic exposure and risk of health conditions with childhood onset, after adjustment for child confounders (male sex, birth weight, ethnicity, and cesarean section) and maternal confounders (age, education, smoking, and antibiotic use during pregnancy). HRs and CIs highlighted in red are statistically significant. Attention-deficit hyperactivity disorder is abbreviated as ADHD. (B) Cumulative probability of developing 1, 2, and 3 or more health conditions in children unexposed or exposed to antibiotics stratified by number of prescriptions. (C) Number of years spent with 0, 1, 2, or 3 or more health conditions during the first 14.5 years of life stratified by number of prescriptions.