Table 6

Demographics and clinical symptoms in different subgroups of IIP compared with other studies
1: Demographics and clinical symptoms in IPF
Author n m : f age dyspnoe cough symptoms (years) smoker
Our study 27 4.4:1 59.4 96.3% 77.7% 1.7 66.7%
Carrington 1978, USA [23] 53 1.7:1 51 n.d. n.d. 2.5 71%
Matuso 1996, Japan [24] 30 2.5:1 60 88.6% 100% 1.1 60%
Bjoraker 1998, USA [18] 64 1:1 65 89% 71% n.d. 54%
Daniil 1999, UK [25] 15 4:1 56 100% 60% 1.5 80%
Nicholson 2000, UK [21] 37 8.3:1 57.2 n.d. n.d. 1.3 78%
2: Demographics and clinical symptoms in NSIP
Author n m : f age dyspnoe cough symptoms (years) smoker
Our study 14 3:4 49.2 92.9% 64.3% 1.7 57%
Bjoraker 1998, USA [18] 15 1.3:1 57 100% 85% n.d. 57%
Katzenstein 1994, USA [33] 64 1:1.5 46 n.d. n.d. 0.7 58%
Park 1996, Korea [34] 7 1:6 56 n.d. n.d. 0.33 14.3%
Daniil 1999, UK [25] 15 1:1.1 56 100% 60% 1.5 60%
Nicholson 2000, UK [21] 28 2.5:1 53.5 n.d. n.d. 0.9 64.3%
Cottin 1998, France [35] 12 1:1 52.5 100% 67% n.d. 50%
3: Demographics and clinical symptoms in RBILD
Author n m : f age dyspnoe cough smoker pack years
Our study 6 5:1 44.6 66.7% 50% 100% 26.6
Myers 1987, USA [26] 6 5:1 36 83.3% 83.3% 100% 39
Yousem 1989, USA [27] 18 1.25:1 36 67% 50% 100% 32
Myers 1992, USA [36] ? 1.7:1 36.1 70.8% 58.3% 100% 33.4
Moon 1999, UK [37] 10 1:1 47.1 70% 30% 90% 39.4
4: Demographics and clinical symptoms in COP
Author n m : f age dyspnoe cough smokers
Our study 10 7:3 54.8 70% 80% 70%
Nagai 1998, Japan [19] 16 1:2 56.9 n.d. n.d. 31%
Guerry-Force 1987, Canada [29] 15 3:1 56 78.5% 86% 54.5%
Costabel 1992, Germany [38] 10 7:3 55 90% 90% n.d.
Müller 1987, Canada [31] 15 11:4 56.6 78.6% 86.7% 54.5%
King 1992, USA [32] 112 1.2:1 58 49% 72% 57%
Izumi 1992, Japan [39] 34 1:1 57 47% 76% 44%

Theegarten et al.

Theegarten et al. Diagnostic Pathology 2012 7:160   doi:10.1186/1746-1596-7-160

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