Table:
Features	n	%
Age (years)
≤65	561	79.3
>65	146	20.7
Gender
Male	454	64.2
Female	253	35.8
Symptoms initially presented
Cough	597	84.4
Shortness of breath	244	34.5
Chest pain	243	34.4
Hemoptysis or blood in phlegm	233	33.0
Hoarseness	30	4.2
KPS (Karnofsky Performance Status)
>80 point	543	76.8
≤80 points	164	23.2
Smoking history
Yes	442	62.5
No	265	37.5
Family history of cancer
Yes	116	16.4
No	591	83.6
Thoracic irradiation
Yes	294	41.6
No	413	58.4
Surgery
Yes	25	3.5
No	682	96.5
Chemotherapy cycles
<4	332	47.0
≥4	375	53.0
Metastatic sites
<2	642	90.8
≥2	65	9.2
Stage
LD	419	59.3
ED	288	40.7

Transform the diagram into Markdown format.

| Features | n | % | 
 | --- | --- | --- | 
 | Age (years) | <COLSPAN=2>  | 
 | ≤65 | 561 | 79.3 | 
 | >65 | 146 | 20.7 | 
 | Gender | <COLSPAN=2>  | 
 | Male | 454 | 64.2 | 
 | Female | 253 | 35.8 | 
 | Symptoms initially presented | <COLSPAN=2>  | 
 | Cough | 597 | 84.4 | 
 | Shortness of breath | 244 | 34.5 | 
 | Chest pain | 243 | 34.4 | 
 | Hemoptysis or blood in phlegm | 233 | 33.0 | 
 | Hoarseness | 30 | 4.2 | 
 | KPS (Karnofsky Performance Status) | <COLSPAN=2>  | 
 | >80 point | 543 | 76.8 | 
 | ≤80 points | 164 | 23.2 | 
 | Smoking history | <COLSPAN=2>  | 
 | Yes | 442 | 62.5 | 
 | No | 265 | 37.5 | 
 | Family history of cancer | <COLSPAN=2>  | 
 | Yes | 116 | 16.4 | 
 | No | 591 | 83.6 | 
 | Thoracic irradiation | <COLSPAN=2>  | 
 | Yes | 294 | 41.6 | 
 | No | 413 | 58.4 | 
 | Surgery | <COLSPAN=2>  | 
 | Yes | 25 | 3.5 | 
 | No | 682 | 96.5 | 
 | Chemotherapy cycles | <COLSPAN=2>  | 
 | <4 | 332 | 47.0 | 
 | ≥4 | 375 | 53.0 | 
 | Metastatic sites | <COLSPAN=2>  | 
 | <2 | 642 | 90.8 | 
 | ≥2 | 65 | 9.2 | 
 | Stage | <COLSPAN=2>  | 
 | LD | 419 | 59.3 | 
 | ED | 288 | 40.7 |