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Table 1 Baseline characteristics of study population, n (%)

From: Survival differences between patients with de novo and relapsed/progressed advanced non-small cell lung cancer without epidermal growth factor receptor mutations or anaplastic lymphoma kinase rearrangements

 

Total

(n = 14,505)

De novo patients

(n = 12,811)

Relapsed/progressed patients (n = 1,694)

Age group at initiation of first-line therapy, years

 

< 60

2,682 (18.5)

2,354 (18.4)

328 (19.4)

 

60–69

5,269 (36.3)

4,578 (35.7)

691 (40.8)

 

70–79

5,499 (37.9)

4,894 (38.2)

605 (35.7)

 

≥ 80

1,055 (7.3)

985 (7.7)

70 (4.1)

Sex

 

Male

12,633 (87.1)

11,160 (87.1)

1,473 (87.0)

 

Female

1,872 (12.9)

1,651 (12.9)

221 (13.1)

CCI

 

< 3

9,290 (64.1)

8,225 (64.2)

1,065 (62.9)

 

≥ 3

5,215 (36.0)

4,586 (35.8)

629 (37.1)

Insurance type

 

National health insurance

13,479 (92.9)

11,907 (92.9)

1,572 (92.8)

 

Medical aid or veterans

1,026 (7.1)

904 (7.1)

122 (7.2)

Type of hospital at initiation of first-line therapy

 

Tertiary hospital

10,512 (72.5)

9,251 (72.2)

1,261 (74.4)

 

Others

3,993 (27.5)

3,560 (27.8)

433 (25.6)

Geographic region of hospital

 

Capital area

9,408 (64.9)

8,220 (64.2)

1,188 (70.1)

 

Metropolitans

2,753 (19.0)

2,477 (19.3)

276 (16.3)

 

Rural

2,344 (16.2)

2,114 (16.5)

230 (13.6)

Time point at initiation of first-line therapy

 

Pre-immunotherapy era

8,117 (56.0)

7,194 (56.2)

923 (54.5)

 

Post-immunotherapy era

6,388 (44.0)

5,617 (43.9)

771 (45.5)

  1. CCI, Charlson comorbidity index
  2. All percentages may not be a total of 100% due to rounding.