Table 4.

Presence of comorbid conditions by surgical intervention and era

Comorbid Condition per Surgical InterventionOverall Percentage of Patients with ConditionPercentage of Patients with Comorbid Condition by Era
1998–20012002–2006 (Percentage Change from 1998 to 2001)2007–2010 (Percentage Change from 1998 to 2001)
Living-donor nephrectomy (n=69,117)
 Obesity2.4 1.62.6 (63)3.1 (94)
 Depression2.61.53.1 (107)3.0 (100)
 Chronic pulmonary disorders3.4)3.03.7 (23)3.4 (13)
 Hypertension1.20.40.5 (25)3.1 (675)
 Hypothyroidism2.81.93.2 (68)3.3 (74)
Cholecystectomy (n=3,011,628)
 Obesity11.77.311.1 (52)16.7 (129)
 Depression5.42.85.7 (104)7.7 (175)
 Chronic pulmonary disorders9.06.99.3 (35)10.8 (57)
 Hypertension24.419.324.8 (28)28.7 (49)
 Hypothyroidism5.03.95.1 (31)6.0 (54)
Appendectomy (n=2,262,065)
 Obesity4.52.44.1 (71)6.7 (179)
 Depression2.81.32.8 (131)3.9 (200)
 Chronic pulmonary disorders4.93.54.9 (40)6.1 (74)
 Hypertension11.57.411.5 (55)15.0 (103)
 Hypothyroidism2.51.52.5 (67)3.2 (113)
Nephrectomy for nonmetastatic carcinoma (n=13,461)
 Obesity6.75.34.9 (−7.5)10.4 (96)
 Depression4.92.74.7 (−74)7.1 (163)
 Chronic pulmonary disorders15.411.916.0 (34)18.4 (55)
 Hypertension40.47.411.5 (55)15.0 (103)
 Hypothyroidism4.74.24.9 (17)4.9 (17)