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. Author manuscript; available in PMC: 2010 May 3.
Published in final edited form as: Arch Intern Med. 2009 Mar 9;169(5):480–488. doi: 10.1001/archinternmed.2008.587

Table 3. Comparison of Patient Characteristics Between the Matched and Unmatched Subjects (N=248 vs. 355).

Matched Subjects p-value
Yes
248 (41.1%)
No
355 (58.9%)
Baseline socio-demographic variables

 Age; mean (SD) 59.4 (13.5) 58.7 (12.8) 0.54
 Male sex; N (%) 117 (47.2) 191(53.8) 0.11
 Race/Ethnicity; N (%) 0.10
  White, non-Hispanic 169 (68.2) 261 (73.5) 0.15
  Black, non-Hispanic 41 (16.5) 48 (13.5) 0.31
  Hispanic 36 (14.5) 36 (10.1) 0.10
  Asian 1 (0.4) 9 (2.5) 0.05
 Marriage; N (%) 100 (40.3) 113 (32.8) 0.06
 Education; mean (SD) 12.3 (3.8) 13.1 (4.1) 0.01
 Health Insurance; N (%) 146 (58.9) 266 (76.4) 0.0001
 Religion; N (%) 0.04
  Catholic 113 (45.6) 146 (41.2) 0.29
  Protestant 37 (14.9) 75 (21.2) 0.05
  Jewish 7 (2.8) 12 (3.4) 0.70
  Baptist 38 (15.3) 29 (8.2) 0.006
  Other 12 (4.8) 20 (5.7) 0.66
  None 6 (8.0) 1 (1.4) 0.20
 Cancer Type; N (%) 0.45
  Breast 29 (11.7) 35 (10.1) 0.54
  Colorectal 35 (14.2) 33 (9.6) 0.08
  Pancreatic 21 (8.5) 29 (8.4) 0.97
  Other GI 30 (12.2) 44 (12.8) 0.83
  Lung 54 (21.9) 90 (26.1) 0.24
  Other c 79 (31.9) 124 (34.9) 0.43

Baseline Health Status; mean (SD)

 Karnofsky score 66.0 (16.1) 68.3 (17.2) 0.11
 Charlson index 8.5 (2.7) 7.9 (2.7) 0.007
 McGill physical subscale a 5.9 (2.8) 6.2 (2.6) 0.32
 McGill symptom subscale a 10.4 (4.3) 12.0 (4.4) <0.0001

Recruitment Site; N (%) <0.0001

 Yale Cancer Center 28 (11.3) 125 (38.5) 0.0001
 VACCC b 12 (4.8) 9 (2.8) 0.20
 Parkland Hospital c 110 (44.4) 68 (20.9) <.0001
 Simmons Center d 20 (8.1) 20 (6.2) 0.37
 DFCI/MGH e 20 (8.1) 27 (8.3) 0.92
 NHOH f 56 (22.6) 75 (23.1) 0.89

Illness Acknowledgement, N (%)

 Wants to know life expectancy 187 (75.4) 239 (68.9) 0.08
 Trust physician 242 (98.8) 349 (98.9) 1.00

 Acknowledge yourself to be terminal ill 94 (37.9) 109 (31.7) 0.12

Treatment Preferences, N (%)

 Values life extension over comfort 36 (14.5) 122 (34.4) <.0001
 Prefers everything possible to extend life for a few days 48 (19.4) 74 (21.7) 0.49
 Prefers chemotherapy to extend life 143 (57.7) 168 (49.1) 0.04
 Prefers ventilator to extend life 53 (21.4) 89 (26.1) 0.19
 Preference against death in ICU 99 (39.9) 122 (37.0) 0.47

Note: Italicized rows represent continuous measures; mean and standard deviation (SD) shown.

a

McGill Quality of Life Questionnaire Items (scale 0-10) where 0 is desirable and 10 is undesirable.

b

VACCC=Veterans Affairs Connecticut Healthcare System Comprehensive Cancer Clinics.

c

Parkland Hospital=Parkland Hospital Palliative Care Service, Texas.

d

Simmons Center=Simmons Comprehensive Cancer Center, Texas.

e

DFCI/MGH =Dana-Farber Cancer Institute and Massachusetts General Hospital.

f

NHOH=New Hampshire Oncology Hematology.