Table 1 Summary of studies for colorectal cancer rates (per 100,000) in Iran

Somi 2014 [15]

East Azerbaijan

2007–2011

366

3724620

59.4 (±14.7)

NP

M:11.2

M:11.5

55/45

NP

F:8.93

F:9.22

Rouhollahi 2014 [10]

Iran

2011–2013

7163

75149669

NP

NP

M:11.6

NP

NP

NP

F:10.5

Moradi Nejad 2014 [45]

Hormozgan

2011

23

1578183

M:56

NP

NP

M:1.1

55/45

NP

F:51

F:1.2

Vakili 2014 [46]

Yazd

2005–2009

NP

990818

M:60.07 (±19.49)

NP

2005–2009

NP

53.5/46.5

NP

M: 6.1–9.9

F:54.93 (±18.03)

F:5.2–6.0

Askarian 2014 [47]

Fars

2001–2009

1531

4.6 million

NP

NP

9Y

9Y

58/42

NP

M:63.36

M:44.04

F:48.15

F:32.81

Amoori 2014 [48]

Khouzestan

2004–2008

NP

4531720

NP

NP

M:11.6

NP

NP

NP

F:10

Overall:10.8

Fateh 2013 [49]

Shahroud

2000–2010

NP

234825

61.8 (±4.4)

NP

10Y

10Y

53.3/46.7

NP

M:114.8

M:98.9

F:95.4

F:83.9

Overall:105.2

Overall:91.6

Rohani-Rasaf 2013 [23]

Tehran

2008

NP

13422366

NP

NP

M:16.4

NP

NP

NP

F:12.2

Talaiezadeh 2013 [50]

Khuzestan

2002–2009

1102

4,531,720

52.91 (±20.95)

NP

M:6.32

M:4.32

51.4/48.6

NP

F:5.72

F:3.45

Abdifard 2013 [6]

West of Iran:

2000–2005

762

1:1945227

NP

NP

2000–2005

NP

NP

NP

1. Kermanshah

2:1493645

1:07–6.2

2. Kordestan

3:557599

2:2.7–4.1

3. Ilam

4:175826

3:0.0–2.1

4. Hamedan

Overall:575739

4:1.8–4.6

Overall:1.5–4.8

Hosseinzadeh 2012 [51]

Isfahan

2009

125

4879312

58.38 (±11.64)

5.6 %

Overall :2.37

NP

53.8/47.2

NP

Roshandel 2012 [30]

Golestan

2004–2008

611

1640200

M:62 (±25)

NP

M: 12.4

M:8.34

56.4/43.6

NP

F:53 (±25)

F: 9.5

F:6.54

Safaee 2012 [16]

INCRS

2005–2009

19617

70166948

58.9 (±15.4)

11 %

4Y

NP

56/44

Colon: 62 %

M:39.96

Rectal: 35.1 %

F:36.16

Anus & Anal canal: 2.9 %

Overall:38.0

Najafi 2011 [52]

Kermanshah

1994–2007

665

2000000

NP

NP

1993–2007

NP

59/41

NP

3.5–5.7

Overall:4.5

Rohani-Rasaf 2011 [53]

Tehran

2007

509

7803883

NP

NP

M:13.418

M:7.324

NP

NP

F:4.284

F:5.710

Overall:4.940

Overall:6.522

Haghdoost 2011 [2]

Kerman

1991–2002

551

2.6 million

56.4

NP

12Y

12Y

49.9/50.1

NP

M:50

M:21

F: 53

F:22

Zendehdel 2010 [54]

Iran

2004–2006

NP

70166948

NP

NP

M:7.1

M:6.1

NP

NP

F:6.5

F:5.4

Koosha 2010 [33]

East Azerbaijan

2007

208

3603456

54.97 (±18)

NP

M:7.98

M: 6.3

57.2/42.8

NP

F:5.67

F: 4.82

Overall:6.78

Overall:5.55

Mashhadi 2010 [24]

Zahedan

2003–2006

94

2405742

51 (±19)

NP

4Y

NP

58/42

NP

M: 41

F: 53

Keshtkar 2009 [55]

Golestan

2004–2005

47

1617087

52.2 (±13.8)

10.6 %

Overall:6.26

NP

NP

NP

Somi 2009 [14]

East Azerbaijan

2006–2007

337

3603456

M:54.53 (±14.21)

NP

M:11.57

M:10.2

55.4/44.6

NP

F:6.91 (±14.41)

F:9.73

F:8.50

Babaei 2009 [56]

Ardabil

2004–2006

241

1,228,155

59.8 (±17.8)

NP

M:9.6

M:7.6

59.75/40.24

NP

F:7.4

F:5.3

Ganji 2009 [57]

Iran

2000–2004

1198

63741000

NP

NP

M: 8.3

NP

53/47

NP

F: 6.5

Overall: 7.4

Abdollahian 2009 [58]

Lorestan

1999–2003

39

1754243

NP

0 %

8.94

NP

56.4/43.6

NP

Mousavi 2008 [59]

Iran

2005–2006

4056

10629166

NP

NP

M: 8.19

M:6.37

55.6/44.4

NP

F: 7.56

F:5.36

Overall: 8

Mehrabani 2008 [60]

Fars

1990–2005

197

4336878

NP

NP

M: 3.26

M:1.92

56.85/43.15

NP

F:2.41

F:1.51

Fakheri 2008 [3]

Mazandaran

Oct1999–Feb2008

296

2922432

52.6 (±15.24)

33.5 %(98)

8Y

NP

51.35/48.65

RS: 40.2 %

Overall :10.94

LS: 18.58 %

Rectal: 42.7 %

Salari 2007 [61]

Yazd

1992–1999

191

990818

NP

7.4 %

Overall:5.34

NP

55.5/44.5

RS: 16.2 %

LS:35.1 %

Rectal:32.5 %

Sadjadi 2007 [38]

Kerman

1996–2000

378

2004328

M:53.1 (±21.4)

NP

M: 5.9

M:3.9

52.64/47.36

NP

F:49.5 (±19.3)

F:5.9

F:3.6

Semnani 2006 [31]

Golestan

2006

139

1640200

NP

NP

M:16,

M:10.2,

60.43/39.57

NP

F:9.2,

F:6.8

Overall:12.6

Overall:8.5

Bafandeh 2006 [34]

East Azerbaijan-Tabriz

1992–2005

143

3603456

53.9 (±13.3)

13.3 %

Overall:10.44

NP

62.2/37.8

RS: 18.2 %

LS:39.1 %

Rectal: 42.6 %

Somi 2006 [35]

East Azerbaijan

1999–2004

NP

3,500,000

M:63.3 (±12.8)

NP

M:6.7

M:6.0

NP

NP

F:59.5 (±13.4)

F:5.2

F:4.8

Ansari 2006 [1]

Gilan

1996–2000

2055

9.5 million

NP

17 %

M:1.64

NP

54.9/44.0

NP

Mazandaran

F:1.4

Golestan

Ardabil

Kerman

Pahlavan 2005 [22]

1. Ardabil

1996–2000

1628

1.1168011

NP

NP

1.M:7.86

1.M:5.0

57.4/42.5

NP

2. Mazandaran

2.1740772

F:5.89

F:3.3

3. Golestan

3.1522468

2.M:9.9

2.M:8.9

4. Kerman

4.2004328

F:8.4

F:7.0

3.M:10.7

3.M:7.4

F:6.5

F:4.2

4.M:5.9

4.M:3.9

F:5.9

F:3.6

Sadjadi 2005 [62]

Golestan

1996–2000

3641

6.4 million

NP

NP

M: 8.3

NP

56.2/43.8

NP

Mazandaran

F: 6.5

Kerman

Ardabil

Babaei 2005 [63]

Semnan

1998–2001

NP

293000

59.41 (±19.08)

NP

M: 11.62

M:10.6

54/46

NP

F: 10.52

F:8.4

Jalali 2005 [64]

Iran

1981–2001

900

13422366

51.07 (±14.87)

26 %

Overall :7.82

NP

58/42

RS:12.7 %

LS:22.91 %

Rectal: 64.65 %

Emami 2005 [65]

Isfahan

1996–2003

1100

4559256

NP

15.2 %

7Y

NP

NP

RS:14.1

Overall :24.95

LS:24.3 %

Rectal: 61.6 %

Yazdanbod 2004 [66]

Ardabil

1996–1999

NP

1128864

NP

NP

M: 7.86

M:5.04

NP

NP

F:5.89

F:3.33

Nikshoar 2004 [67]

Iran

1992–2002

2107

13422366

NP

20.4 %

10 Y

NP

55.9/44.1

RS: 13.9 %

M:20.84

LS:30.5 %

F:17.56

Rectal:55.7 %

Sadjadi 2003 [68]

Ardabil

1996–1999

180

1128864

M:59.1 (±16.7)

NP

M: 7.9

M:5

60/40

NP

F: 5.9

F:3.3

F:53.0 (±17.8)

Sarmast 2002 [39]

Khuzestan

1992–1999

100

4274979

NP

30 %

Overall :3.53

NP

58/42

RS:13 %

LS:42 %

Rectal:45 %

Sotoudehmanesh 2002 [69]

Iran

1991–2000

380

13422366

53.9 (±15.6)

22.3 %

Overall :6

NP

60.3/39.7

NP

Molanaei 2000 [70]

Kurdistan

1995–1999

100

1440156

51.49

23 %

5Y

NP

61/39

NP

Overall :8.82