Table 2.
Training population descriptive statistics.
| General characteristics | Colon resections without C-Diff (n = 111,368) |
Colon resections with C-Diff (n = 1829) |
P | Total (N = 113,197) |
||
| Average length of stay (days) | 10.5 | 23.6 | <.001 | 10.8 | ||
| In-hospital mortality, n (%) | 5432 (4.9) | 336 (18.4) | <.001 | 5768 (5.1) | ||
| Mean age (years) | 62.9 | 68.3 | <.001 | 63.0 | ||
| Sex, n (%) | ||||||
| Female | 59,520 (53.4) | 1007 (55.1) | .19 | 60,527 (53.5) | ||
| Male | 51,848 (46.6) | 822 (44.9) | .19 | 52,670 (46.5) | ||
| Disposition (DISPUNIFORM), n (%) | ||||||
| 1 = Routine | 69,339 (62.3) | 409 (22.4) | 69,748 (61.6) | |||
| 2 or 5 = Other facility | 17,787 (16.0) | 710 (38.8) | 18,497 (16.3) | |||
| 6 = Home health | 18,616 (16.7) | 373 (20.4) | 18,989 (16.8) | |||
| 20 = Died in hospital | 5464 (4.9) | 336 (18.4) | 5800 (5.1) | |||
| Other | 162 (0.1) | 1 (0.1) | 163 (0.1) | |||
| Disease stage a (DS_Stage1), n (%) | ||||||
| 0 | 59 (0.1) | 0 (0.0) | 59 (0.1) | |||
| 1 | 38,973 (35.0) | 438 (23.9) | 39,411 (34.8) | |||
| 2 | 49,452 (44.4) | 647 (35.4) | 50,099 (44.3) | |||
| 3 | 22,884 (20.5) | 744 (40.7) | 23,628 (20.9) | |||
| Mean | 1.9 | 2.2 | <.001 | 1.9 | ||
| Admission source, n (%) | ||||||
| 1 = Emergency department | 34,555 (31.0) | 922 (50.4) | 35,477 (31.3) | |||
| 2 = Another hospital | 1968 (1.8) | 96 (5.2) | 2064 (1.8) | |||
| 3 = Another facility including long-term care | 936 (0.8) | 61 (3.3) | 997 (0.9) | |||
| 4 = Court/law enforcement | 35 (0.0) | 0 (0.0) | 35 (0.0) | |||
| 5 = Routine/birth/other | 73,372 (65.9) | 738 (40.3) | 74,110 (65.5) | |||
| Unknown | 502 (0.5) | 12 (0.7) | 514 (0.5) | |||
| Comorbidities, n (%) | ||||||
| CM_AIDS (Acquired immune deficiency syndrome) | 93 (0.1) | 3 (0.2) | .24 | 96 (0.1) | ||
| CM_ALCOHOL (Alcohol abuse) | 2163 (1.9) | 51 (2.8) | .009 | 2214 (2.0) | ||
| CM_ANEMDEF (Deficiency anemias) | 16,846 (15.1) | 348 (19.0) | <.001 | 17,194 (15.2) | ||
| CM_ARTH (Rheumatoid arthritis/collagen vascular diseases) | 2038 (1.8) | 47 (2.6) | .02 | 2085 (1.8) | ||
| CM_BLDLOSS (Chronic blood loss anemia) | 5197 (4.7) | 97 (5.3) | .20 | 5294 (4.7) | ||
| CM_CHF (Congestive heart failure | 9490 (8.5) | 364 (19.9) | <.001 | 9854 (8.7) | ||
| CM_CHRNLUNG (Chronic pulmonary disease) | 18,120 (16.3) | 476 (26.0) | <.001 | 18,596 (16.4) | ||
| CM_COAG (Coagulopathy) | 3825 (3.4) | 212 (11.6) | <.001 | 4037 (3.6) | ||
| CM_DEPRESS (Depression) | 5482 (4.9) | 105 (5.7) | .11 | 5587 (4.9) | ||
| CM_DM (Diabetes, uncomplicated) | 14,787 (13.3) | 224 (12.2) | .20 | 15,011 (13.3) | ||
| CM_DMCX (Diabetes with chronic complications) | 1479 (1.3) | 50 (2.7) | <.001 | 1529 (1.4) | ||
| CM_DRUG (Drug abuse) | 866 (0.8) | 11 (0.6) | .39 | 877 (0.8) | ||
| CM_HTN_C (Hypertension combine uncomplicated and complicated) | 48,181 (43.3) | 738 (40.3) | .01 | 48,919 (43.2) | ||
| CM_HYPOTHY (Hypothyroidism) | 8384 (7.5) | 116 (6.3) | .06 | 8500 (7.5) | ||
| CM_LIVER (Liver disease) | 1733 (1.6) | 39 (2.1) | .048 | 1772 (1.6) | ||
| CM_LYMPH (Lymphoma) | 666 (0.6) | 20 (1.1) | .007 | 686 (0.6) | ||
| CM_LYTES (Fluid and electrolyte disorders) | 25,651 (23.0) | 881 (48.2) | <.001 | 26,532 (23.4) | ||
| CM_METS (Metastatic cancer) | 16,488 (14.8) | 178 (9.7) | <.001 | 16,666 (14.7) | ||
| CM_NEURO (Other neurological disorders) | 3849 (3.5) | 125 (6.8) | <.001 | 3974 (3.5) | ||
| CM_OBESE (Obesity) | 5940 (5.3) | 53 (2.9) | <.001 | 5993 (5.3) | ||
| CM_PARA (Paralysis) | 1085 (1.0) | 37 (2.0) | <.001 | 1122 (1.0) | ||
| CM_PERIVASC (Peripheral vascular disorders) | 3894 (3.5) | 103 (5.6) | <.001 | 3997 (3.5) | ||
| CM_PSYCH (Psychoses) | 1841 (1.7) | 46 (2.5) | .004 | 1887 (1.7) | ||
| CM_PULMCIRC (Pulmonary circulation disorders) | 684 (0.6) | 22 (1.2) | .002 | 706 (0.6) | ||
| CM_RENLFAIL (Renal failure) | 5042 (4.5) | 230 (12.6) | <.001 | 5272 (4.7) | ||
| CM_TUMOR (Solid tumor without metastasis) | 2983 (2.7) | 62 (3.4) | .06 | 3045 (2.7) | ||
| CM_ULCER (Peptic ulcer disease excluding bleeding) | 61 (0.1) | 1 (0.1) | .99 | 62 (0.1) | ||
| CM_VALVE (Valvular disease) | 5444 (4.9) | 135 (7.4) | <.001 | 5579 (4.9) | ||
| CM_WGHTLOSS (Weight loss) | 7000 (6.3) | 381 (20.8) | <.001 | 7381 (6.5) | ||
| Infectious variables, n (%) | ||||||
| BacterialInfectionAny | 12,693 (11.4) | 777 (42.5) | <.001 | 13,470 (11.9) | ||
| BacterialInfectionOther | 4531 (4.1) | 139 (7.6) | <.001 | 4670 (4.1) | ||
| EColiSepticemia | 329 (0.3) | 12 (0.7) | .005 | 341 (0.3) | ||
| OtherGramNegSepticemia | 472 (0.4) | 33 (1.8) | <.001 | 505 (0.4) | ||
| OtherSpecSepticemia | 147 (0.1) | 51 (2.8) | <.001 | 198 (0.2) | ||
| SexTransInfectNotHIVnorHep | 18 (0.0) | 0 (0.0) | .59 | 18 (0.0) | ||
| StaphylococcalSepticemia | 746 (0.7) | 79 (4.3) | <.001 | 825 (0.7) | ||
| StreptococcalSepticemia | 367 (0.3) | 30 (1.6) | <.001 | 397 (0.4) | ||
| Tuberculosis | 140 (0.1) | 3 (0.2) | .65 | 143 (0.1) | ||
| UnspecSepticemia | 6875 (6.2) | 500 (27.3) | <.001 | 7375 (6.5) | ||
| InflamAndOtherInfection | 68,447 (61.5) | 1554 (85.0) | <.001 | 70,001 (61.8) | ||
a Thomson-Reuters/Medstat: stage of principal disease category