Table 1 Distribution of basic characteristics of lung cancer cases

Histology

2734

100.0

1110

100.0

<0.001

 Squamous cell carcinoma

585

21.4

93

8.4

 Adenocarcinoma

908

33.2

583

52.5

 Non-small cell carcinoma

131

4.8

41

3.7

 Other

219

10.7

71

6.4

 Unknown

791

28.9

322

29.0

Age (mean, SD)

64.5

12.4

63.8

14.4

<0.605**

Religion

<0.001

 Buddhist & others

2328

85.1

1004

90.4

 Muslim

406

14.9

106

9.6

District

0.047

 Muang Songkhla

455

16.6

161

14.5

 Sathing Phra

101

3.7

56

5.1

 Chana

194

7.1

77

6.9

 Na Thawi

135

4.9

41

3.7

 Thepha

116

4.2

42

3.8

 Saba Yoi

64

2.3

21

1.9

 Ranot

150

5.5

71

6.4

 Krasae Sin

30

1.1

14

1.3

 Rattaphum

113

4.1

46

4.1

 Sadao

265

9.7

79

7.1

 Hat Yai

782

28.6

355

32.0

 Na Mom

47

1.7

23

2.1

 Khuan Niang

58

2.1

37

3.3

 Bang Klam

45

1.6

17

1.5

 Singhanaknon

141

5.2

55

4.9

 Khlong Hoi Khong

38

1.4

15

1.3

Year interval

<0.001

 1989–1993

272

10.0

92

8.3

 1994–1998

336

12.3

130

11.7

 1999–2003

434

15.9

178

16.0

 2004–2008

794

29.0

257

23.2

 2009–2013

898

32.8

453

40.8