Factor
|
n
|
No. tests prior to diagnosis
|
p
#
|
p
##
|
---|
Patient characteristics
| | | | |
Age(yr)
| | | | |
35–65
|
52
|
3 (1–14)
|
0.43
|
0.02
|
> 65
|
60
|
4 (1–21)
| | |
Sex
| | | | |
Male
|
82
|
4 (1–21)
|
0.22
|
0.86
|
Female
|
30
|
3 (1–12)
| | |
Referral pattern
| | | | |
GP
|
18
|
2 (1–6)
|
<0.01
|
<0.01
|
Specialist
|
94
|
4 (1–21)
| | |
History of smoking
| | | | |
Never smoked
|
33
|
2 (1–12)
|
<0.01
|
<0.01
|
Current or past smoker
|
79
|
5 (1–21)
| | |
Nodule characteristics
| | | | |
Calcification within the nodule
| | | | |
Yes
|
12
|
2 (1–14)
|
0.04
|
0.76
|
No
|
100
|
4 (1–21)
| | |
Spiculated nodule
| | | | |
Yes
|
32
|
5 (1–14)
|
0.02
|
0.01
|
No
|
80
|
3 (1–21)
| | |
Mediastinal involvement
| | | | |
Yes
|
31
|
4 (1–21)
|
0.4
|
0.19
|
No
|
81
|
4 (1–12)
| | |
- GP = General Practitioner.
-
p
# In Mann-Whitney test.
-
p
## In multivariate Poisson regression model.