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. 2016 Apr 2;16:45. doi: 10.1186/s12890-016-0205-5

Table 5.

Characteristics of patients without cancer therapy according to their vital statusa (N = 951)

Vital status at
1 month 3 months
Alive Dead Alive Dead
N N = 514 N = 437 p-value N = 258 N = 693 p-value
Sex n = 514 n = 437 0.071 n = 258 n = 693 0.911
 Men, n (%) 733 384 (74.7) 349 (79.9) 200 (77.5) 533 (76.9)
 Women, n (%) 218 130 (25.3) 88 (20.1) 58 (22.5) 160 (23.1)
Age n = 514 n = 437 <0.001 c n = 258 n = 693 <0.001
 ≤40 years, n (%) 1 0 (0) 1 (0.2) 0 (0) 1 (0.1)
 41-50 years, n (%) 31 14 (2.7) 17 (3.9) 4 (1.6) 27 (3.9)
 51-60 years, n (%) 135 54 (10.5) 81 (18.5) 24 (9.3) 111 (16.0)
 61-70 years, n (%) 216 101 (19.6) 115 (26.3) 46 (17.8) 170 (24.5)
 71-80 years, n (%) 302 179 (34.8) 123 (28.1) 101 (39.1) 201 (29.0)
 >80 years, n (%) 266 166 (32.3) 100 (22.9) 83 (32.2) 183 (26.4)
Age n = 514 n = 437 <0.001 n = 258 n = 693 <0.001
 Mean (SD) 74.2 (10.9) 70.1 (11.4) 75 (9.9) 71.3 (11.7)
 Median (Q1-Q3) 76.5 (67-82) 71 (61-80) 77 (69-82) 72 (62-81)
Body mass index (BMI; kg/m2) n = 414 n = 337 0.863 n = 221 n = 530 0.015
 Mean (SD) 23.6 (5.1) 23.5 (4.7) 24.4 (5.4) 23.2 (4.6)
 Median (Q1-Q3) 23.1 (20.1-26.8) 23.4 (20.2-26.4) 24 (20.6-27.4) 23 (19.9-26.2)
Weight loss within the last 3 months n = 490 n = 394 <0.001 n = 249 n = 635 <0.001
 No, n (%) 279 183 (37.3) 96 (24.4) 115 (46.2) 164 (25.8)
 Yes, n (%) 605 307 (62.7) 298 (75.6) 134 (53.8) 471 (74.2)
If yes, n = 298 n = 282 0.224 n = 130 n = 450 0.010
 <5 kg, n (%) 193 108 (36.2) 85 (30.1) 56 (43.1) 137 (30.4)
 5-10 kg, n (%) 233 118 (39.6) 115 (40.8) 56 (43.1) 177 (39.3)
 ≥10 kg, n (%) 154 72 (24.2) 82 (29.1) 18 (13.8) 136 (30.2)
Performance status at diagnosis n = 511 n = 433 <0.001 n = 255 n = 689 <0.001
 0- Fully active, n (%) 65 54 (10.6) 11 (2.5) 42 (16.5) 23 (3.3)
 1- Restricted in heavy physical work, n (%) 179 120 (23.5) 59 (13.6) 78 (30.6) 101 (14.7)
 2- Up and about more than half the day, n (%) 221 127 (24.8) 94 (21.7) 59 (23.1) 162 (23.5)
 3- In bed or sitting in a chair more than half the day, n (%) 336 174 (34.1) 162 (37.4) 63 (24.7) 273 (39.6)
 4- In bed or in a chair all the time, n (%) 143 36 (7.0) 107 (24.7) 13 (5.1) 130 (18.9)
Smoking status n = 505 n = 427 0.389 n = 252 n = 680 0.174
 Never-smoker, n (%) 121 69 (13.7) 52 (12.2) 37 (14.7) 84 (12.4)
 Former-smoker, n (%) 399 223 (44.2) 176 (41.2) 116 (46.0) 283 (41.6)
 Active smoker, n (%) 412 213 (42.2) 199 (46.6) 99 (39.3) 313 (46.0)
Tobacco consumption (pack-years) b n = 394 n = 331 0.822 n = 198 n = 527 0.025
 Mean (SD) 47.2 (26.3) 46.1 (22.4) 50 (27.3) 45.5 (23.4)
 Median (Q1-Q3) 45 (30-60) 42 (30-59) 50 (30-60) 42 (30-55)
Tobacco duration (years) b n = 340 n = 280 0.016 n = 172 n = 448 0.012
 Mean (SD) 41.9 (13.5) 39.7 (12) 42.9 (14.1) 40.1 (12.3)
 Median (Q1-Q3) 40 (31.8-50) 40 (30-50) 43 (35-50) 40 (30-50)
Histology n = 514 n = 437 n = 258 n = 693
 Small-cell carcinoma, n (%) 101 26 (5.1) 75 (17.2) <0.001 5 (1.94) 96 (13.9) <0.001
 Adenocarcinoma, n (%) 394 215 (41.8) 179 (41.0) 0.838 96 (37.2) 298 (43.0) 0.124
 Squamous-cell carcinoma, n (%) 297 201 (39.1) 96 (22.0) <0.001 117 (45.4) 180 (26.0) <0.001
 Large-cell carcinoma, n (%) 155 70 (13.6) 85 (19.5) 0.019 38 (14.7) 117 (16.9) 0.483
 Adenocarcinoma in situ, n (%) 5 2 (0.4) 3 (0.7) 0.855 2 (0.8) 3 (0.4) 0.885 c
 Carcinoid tumour, n (%) 3 2 (0.4) 1 (0.2) 1.000 c 1 (0.4) 2 (0.3) 1.000 c
 Other, n (%) 11 7 (1.4) 4 (0.9) 0.736 3 (1.2) 8 (1.2) 1.000 c
Genomic mutation n = 508 n = 430 n = 254 n = 684
 Explored, n (%) 195 110 (21.7) 85 (19.8) 0.530 55 (21.7) 140 (20.5) 0759
If explored, n = 102 n = 76 n = 50 n = 128
 EGFR mutated, n (%) 12 8 (7.84) 4 (5.26) 0.706 4 (8) 8 (6.3) 0.932
Stage (7 edition) n = 502 n = 432 <0.001 n = 252 n = 682 <0.001
 Stage ≤ IIB, n (%) 94 79 (15.7) 15 (3.5) 65 (25.8) 29 (4.3)
 Stage IIIA, n (%) 99 75 (15.0) 24 (5.6) 50 (19.8) 49 (7.2)
 Stage IIIB, n (%) 88 51 (10.2) 37 (8.6) 33 (13.1) 55 (8.1)
 Stage IV, n (%) 653 297 (59.2) 356 (82.4) 104 (41.3) 549 (80.5)

a1 and 3 months after the diagnosis of primary lung cancer (date of diagnosis = date of histological or cytological sampling);

bsmokers (former or active) only;

cFisher test as Chi2-test conditions were not respected

N or n: number of subjects; Q1-Q3: First and third quartiles; SD: standard deviation

Note: Significant p-value are in bold