. Author manuscript; available in PMC: 2016 Jul 21.

Published in final edited form as: J Perinatol. 2016 Jan 21;36(5):342–346. doi: 10.1038/jp.2015.215

Table 1.

Characteristics of Women With and Without Extremely Elevated One Hour (≥180 mg/dL)

Characteristic n=753	One Hour GCT between 140 mg/dL and 180 mg/dL (n=657) n(%) or Mean±SD	One Hour GCT ≥180 mg/dL (n=96) n(%) or Mean±SD	Risk Ratio (95% Confidence Interval)
Age (years)	27.9 ± 6.3	28.7 ± 6.6	–
Age over 30	257 (39.1)	49 (51.0)	1.52 (1.05,2.21)
African American Race	336 (51.1)	50 (52.1)	1.03 (0.71,1.50)
Tobacco Use	105 (16.0)	18 (18.8)	1.18 (0.74, 1.90)
Maternal Body Mass Index (kg/m²)	34.10 ± 8.2	35.91 ± 8.6	–
Normal BMI	213 (33.3)	27 (29.0)	0.84 (0.55,1.28)
Obese	427 (66.7)	66 (71.0)	1.19 (0.78,1.81)
Morbid Obesity	129 (20.2)	23 (24.7)	1.25 (0.81,1.94)
Chronic Hypertension	37 (5.63)	8 (8.33)	1.43 (0.74, 2.76)
History of GDM	144 (21.9)	53 (55.2)	3.48 (2.40,5.02)