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. Author manuscript; available in PMC: 2016 Dec 4.
Published in final edited form as: Hypertens Pregnancy. 2015 Dec 4;34(4):506–515. doi: 10.3109/10641955.2015.1090581

Table 1.

Patient Characteristics at Presentation

Weighted N (%) P-Value
White Black Hispanic
No. of Patients 568124 (3.75) 235007 (6.04) 268014 (2.58) <0.0001

 Age (years)
10 – 19 28135 (5.48) 25115 (11.86) 26767 (11.07) <0.0001
20 – 29 256729 (49.99) 111925 (52.88) 123190 (50.97)
30 – 39 203769 (39.68) 65958 (31.16) 81266 (33.62)
40 – 49 24913 (4.85) 8675 (4.10) 10472 (4.33)
 Median Household Income for Patient’s Zip code (percentile)
0 - 25th 127504 (22.42) 116237 (49.94) 106755 (40.22) <0.0001
26th - 50th 148532 (26.12) 51382 (22.08) 65418 (24.65)
51st - 75th 151746 (26.68) 39509 (16.97) 55926 (21.07)
76th - 100th 140973 (24.79) 25627 (11.01) 37304 (14.06)
 Primary Expected Payer
Medicare 4583 (0.80) 3503 (1.46) 1395 (0.51) <0.0001
Medicaid 175778 (30.50) 147173 (61.51) 174834 (64.03)
Private Insurance 367865 (63.83) 76687 (32.05) 73572 (26.94)
Self-pay 8885 (1.54) 6561 (2.74) 17016 (6.23)
No Charge 713 (0.12) 680 (0.28) 1796 (0.66)
Other 18463 (3.20) 4667 (1.95) 4451 (1.63)

Hospital Characteristics
Hospital Region
Northeast 108309 (18.77) 49173 (20.49) 36063 (13.20) <0.0001
Midwest 117231 (20.31) 33122 (13.80) 11394 (4.17)
South 236670 (41.01) 139447 (58.12) 119230 (43.63)
West 114921 (19.91) 18200 (7.59) 106616 (39.01)

Patient Comorbidities
 Hypertension 53826 (9.33) 40040 (16.69) 23319 (8.53) <0.0001
 Obesity 47199 (8.18) 28619 (11.93) 20965 (7.67) <0.0001
 Diabetes Without Chronic Complications 15385 (2.67) 8374 (3.49) 9518 (3.48) <0.0001
 Diabetes With Chronic Complications 2828 (0.49) 1498 (0.62) 1257 (0.46) <0.0001
 Renal Failure 1252 (0.22) 1054 (0.44) 994 (0.36) <0.0001
 Liver Disease 1039 (0.18) 415 (0.17) 673 (0.25) <0.0001

Pregnancy and Delivery Characteristics
 Multiple Gestation 39724 (6.88) 10433 (4.35) 9635 (3.53) <0.0001
 Multiparity 2783 (0.48) 3426 (1.43) 3460 (1.27) <0.0001
 Cesarean Delivery 324787 (26.28) 137240 (57.20) 144268 (52.79) 0.0001