Table 5.

Probability of IPF in Subjects Aged 60 Years and Older

Age	Reticular Density Composite	IPF Probability (Range)*	No. Subjects Contributing Data**
55–60	0.0 – 0.5	0.55 (0.47–0.62)	9
	0.5 – 1.0	0.67 (0.60–0.74)	6
	1.0 – 1.5	0.78 (0.72–0.83)	5
	1.5 – 2.0	0.86 (0.82–0.89)	6
	2.0 – 2.5	0.91 (0.88–0.93)	0
	2.5 – 3.0	0.95 (0.93–0.96)	0
60—65	0.0 – 0.5	0.57 (0.49–0.65)	8
	0.5 – 1.0	0.69 (0.62–0.76)	11
	1.0 – 1.5	0.80 (0.74–0.84)	12
	1.5 – 2.0	0.87 (0.83–0.90)	4
	2.0 – 2.5	0.92(0.89–0.94)	2
	2.5 – 3.0	0.95 (0.93–0.96)	0
65–70	0.0 – 0.5	0.59 (0.52–0.67)	13
	0.5 – 1.0	0.71 (0.65–0.77)	23
	1.0 – 1.5	0.81 (0.76–0.85)	24
	1.5 – 2.0	0.88 (0.84–0.91)	5
	2.0 – 2.5	0.93 (0.90–0.95)	0
	2.5 – 3.0	0.96 (0.94–0.97)	0
70–75	0.0 – 0.5	0.62 (0.54–0.69)	4
	0.5 – 1.0	0.73 (0.67–0.79)	9
	1.0 – 1.5	0.82 (0.77–0.87)	8
	1.5 – 2.0	0.89 (0.85–0.92)	9
	2.0 – 2.5	0.93 (0.91–0.95)	1
	2.5 – 3.0	0.96 (0.95–0.97)	0
75–80	0.0 – 0.5	0.64 (0.56–0.71)	1
	0.5 – 1.0	0.75 (0.69–0.81)	5
	1.0 – 1.5	0.84 (0.79–0.88)	4
	1.5 – 2.0	0.90 (0.87–0.92)	1
	2.0 – 2.5	0.94 (0.92–0.95)	1
	2.5 – 3.0	0.96 (0.95–0.97)	0
80–85	0.0 – 0.5	0.66 (0.59–0.73)	2
	0.5 – 1.0	0.77 (0.71–0.82)	1
	1.0 – 1.5	0.85 (0.81–0.89)	2
	1.5 – 2.0	0.91 (0.88–0.93)	0
	2.0 – 2.5	0.94 (0.92–0.96)	1
	2.5 – 3.0	0.97 (0.95–0.98)	0

^*The cited probabilities are based on the final model in Table 4, and given for patients with risk factors at the midpoint of the grid cell boundaries for age and reticular density composite, and with ground glass at the median for the overall cohort; Range is the probability range for patients with the minimum and maximum IPF risk within the grid cell boundaries.

^**The number of subjects within the specified age and reticular density composite ranges, from the entire cohort.