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. Author manuscript; available in PMC: 2015 Feb 9.
Published in final edited form as: Obstet Gynecol. 2014 Feb;123(2 0 1):255–262. doi: 10.1097/AOG.0000000000000090

Table 1.

Matched Baseline Characteristics

Characteristic Robotic vs Abdominal
Robotic vs Vaginal
Robotic (n=234) Abdominal (n=234) P Value Robotic (n=212) Vaginal (n=212) P Value
Age at surgery, mean (SD), y 49.7 (12.1) 49.1 (12.1) .54 49.0 (11.6) 46.7 (9.2) .02
Race, No. (%) .17 .004
 White 211 (90.2) 201 (85.9) 186 (87.7) 187 (88.2)
 Nonwhite 10 (4.3) 9 (3.8) 16 (7.5) 4 (1.9)
 Unknown 13 (5.6) 24 (10.3) 10 (4.7) 21 (9.9)
Insurance status, No. (%) .04
 Commercial 183 (78.2) 186 (79.5) 174 (82.1) 188 (88.7)
 Medicare 35 (15.0) 31 (13.2) 22 (10.4) 7 (3.3)
 Other government 14 (6.0) 16 (6.8) 13 (6.1) 14 (6.6)
 No insurance 2 (0.9) 1 (0.4) 2 (0.9) 2 (0.9)
Body mass index, mean (SD), kg/m2 30.4 (9.1) 29.4 (7.4) .60 30.3 (8.8) 31.3 (22.7) .39
Pregnancies, mean (SD), No. 2.0 (1.7) 2.2 (2.1) .72 2.0 (1.7) 2.8 (1.5) <.001
Live births, mean (SD), No. 1.6 (1.5) 1.7 (1.7) .74 1.5 (1.4) 2.3 (1.2) <.001
Vaginal deliveries, mean (SD), No. 1.1 (1.4) 1.3 (1.7) .14 1.1 (1.5) 2.1 (1.2) <.001
Abdominal surgical procedures, mean (SD), No. 1.5 (1.7) 1.4 (1.4) .87 1.4 (1.7) 1.2 (1.3) .55
Comorbid conditions
 Cardiovascular, No. (%) 78 (33.3) 77 (32.9) .92 66 (31.1) 47 (22.2) .11
 Pulmonary, No. (%) 36 (15.4) 28 (12.0) .28 34 (16.0) 26 (12.3) .54
 Gastrointestinal tract, No. (%) 50 (21.4) 41 (17.5) .29 44 (20.8) 46 (21.7) .97
 Genitourinary tract, No. (%) 0 (0) 0 (0) 2 (0.9) 1 (0.5) .85
 Endocrine, No. (%) 68 (29.1) 48 (20.5) .03 53 (25.0) 42 (19.8) .44
 Hematologic, No. (%) 47 (20.1) 32 (13.7) .06 43 (20.3) 38 (17.9) .83
 Social, No. (%) 32 (13.7) 41 (17.5) .25 34 (16.0) 34 (16.0) >.99
 Other, No. (%) 60 (25.6) 56 (23.9) .67 56 (26.4) 46 (21.7) .52
Indication
 Biopsy-proven hyperplasia, No. (%) 15 (6.4) 5 (2.1) .02 12 (5.7) 10 (4.7) .66
 Abnormal uterine bleeding, No. (%) 49 (20.9) 27 (11.5) .006 31 (14.6) 87 (41.0) <.001
 Gynecologic cancer, No. (%) 48 (20.5) 25 (10.7) .003 38 (17.9) 15 (7.1) .001
 Pain, No. (%) 31 (13.2) 31 (13.2) >.99 22 (10.4) 16 (7.5) .31
 Fibroids, No. (%) 74 (31.6) 70 (29.9) .69 70 (33.0) 52 (24.5) .05
 Adnexal mass, No. (%) 14 (6.0) 53 (22.6) <.001 12 (5.7) 13 (6.1) .84
 Other indication, No. (%) 29 (12.4) 24 (10.3) .47 27 (12.7) 20 (9.4) .28