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. Author manuscript; available in PMC: 2015 Jun 2.
Published in final edited form as: Pediatrics. 2012 Nov 12;130(6):e1447–e1454. doi: 10.1542/peds.2012-1107

TABLE 6.

aHRs of Offspring Being Diagnosed With ASD After Self-Reported Use of Antibiotics During Pregnancy

Use of Antibiotics ASD
Infantile Autism
No. Exposed ASD/Non-ASD Crude HR (95% CI) aHRa (95% CI) No. Exposed Infantile Autism/Non–Infantile Autism aHRa (95% CI)
Any antibiotic 214/18 519 1.2 (1.0–1.4) 1.2 (1.0–1.4) 79/18 654 1.2 (0.9–1.7)
Penicillins 121/10 189 1.2 (1.0–1.5) 1.3 (1.0–1.6) 48/10 262 1.4 (1.0–2.0)
Macrolides 17/1514 1.3 (0.8–2.1) 1.3 (0.7–2.2) 9/1522 2.2 (1.1–4.4)
Sulfonamides 34/2280 1.5 (1.1–2.2) 1.5 (1.0–2.2) 12/2302 1.6 (0.9–3.0)
Cephalosporins 12/1121 1.3 (0.7–2.3) 1.1 (0.6–2.3) 6/1127 1.9 (0.8–4.7)
a

Adjusted for maternal age, paternal age, maternal smoking during pregnancy, parity, gender, parents’ educational status, and the parents’ psychiatric condition. Data were analyzed in strata according to year of birth.