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. Author manuscript; available in PMC: 2014 Mar 1.
Published in final edited form as: Am J Obstet Gynecol. 2012 Dec 16;208(3):221.e1–221.e8. doi: 10.1016/j.ajog.2012.12.023

Figure 1. Prevalence of antibiotic use in the first trimester by calendar years of mothers’ last menstrual period date.

Figure 1

Note:
  1. The figure presents trends for those study centers that contribute data throughout study period, i.e., Boston and Philadelphia area.
  2. Note: 4.1% of women reported having used an antibiotic but the type could not be specified.