Duncan, James R.

et al,

Kwan, Marilyn L

English

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© 2019 Kwan ML et al. JAMA Network Open Supplementary Online Content  Kwan ML, Miglioretti DL, Marlow EC, et al. Trends in medical imaging during pregnancy in the United States and Ontario, Canada, 1996-2016. JAMA Netw Open. 2019;2(7):e197249. doi:10.1001/jamanetworkopen.2019.7249  eTable. Use Rates of CT, MRI, Radiography, and Fluoroscopy and Angiography per 1000 Pregnancies by 5-Year Intervals of Child’s Birth, Among Other Anatomic Category, US Sites and Ontario, Canada eFigure. Use Rates of Radiography in Pregnant Women by Birth Year of Child and Individual Study Site  This supplementary material has been provided by the authors to give readers additional information about their work.     © 2019 Kwan ML et al. JAMA Network Open eTable. Use Rates of CT, MRI, Radiography, and Fluoroscopy and Angiography per 1000 Pregnancies by 5-Year Intervals of Child’s Birth, Among Other Anatomic Category, U.S. Sites and Ontario, Canada Modality, Site  Extremity Neck Spine Unknown Year of Birth Year of Birth Year of Birth Year of Birth 1996-2000 2001-2005 2006-2010 2011-2016 1996-2000 2001-2005 2006-2010 2011-2016 1996-2000 2001-2005 2006-2010 2011-2016 1996-2000 2001-2005 2006-2010 2011-2016 Computed Tomography                 U.S. Sites 0.04 0.10 0.10 0.06 0.07 0.10 0.19 0.23 0.16 0.22 0.43 0.67 0.15 0.08 0.07 0.01 Ontario, Canada 0.06 0.09 0.13 0.09 0.00 0.05 0.08 0.14 0.18 0.22 0.23 0.23 0.05 0.00 0.00 0.00 Magnetic Resonance Imaging                 U.S. Sites 0.63 0.55 0.90 1.16 n/a1 n/a n/a n/a 0.46 1.04 1.40 1.43 0.00 0.06 0.15 0.17 Ontario, Canada 0.08 0.16 0.28 0.42 n/a n/a n/a n/a 0.16 0.30 0.71 1.13 0.09 0.04 0.00 0.00 Radiography                 U.S. Sites 23.17 23.83 21.18 21.34 23.17 23.83 21.18 21.34 0.16 0.18 0.25 0.23 4.00 4.96 4.15 3.03 Ontario, Canada 14.83 14.95 14.07 14.48 14.83 14.95 14.07 14.48 0.20 0.52 0.15 0.20 3.56 3.25 2.67 2.38 Angiography and Fluoroscopy                 U.S. Sites 0.10 0.03 0.02 0.02 0.10 0.03 0.02 0.02 0.02 0.10 0.01 0.04 0.03 0.31 0.23 0.20 Ontario, Canada 0.03 n/a 0.06 0.07 0.03 n/a 0.06 0.07 0.08 0.05 0.04 0.00 0.14 0.15 0.49 0.62 a n/a = no observations    © 2019 Kwan ML et al. JAMA Network Open   eFigure . Use Rates of Radiography in Pregnant Women by Birth Year of Child and Individual Study Site 050100150200250Rate per 1,000 PregnanciesYearsa. Radiography Rates by SiteU.S. Site 1U.S. Site 2U.S. Site 3U.S. Site 4U.S. Site 5U.S. Site 6Ontario020406080100120140160180Rate per 1,000 PregnanciesYearsb. Chest Radiography Rates by SiteU.S. Site 1U.S. Site 2U.S. Site 3U.S. Site 4U.S. Site 5U.S. Site 6Ontario

Trends in medical imaging during pregnancy in the United States and Ontario, Canada, 1996 to 2016

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Trends in medical imaging during pregnancy in the United States and Ontario, Canada, 1996 to 2016

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