Table 1. Summary statistics for the human and mouse cohorts.

HUMANS	Overall	Younger 20–44 years	Middle-aged 45–64 years	Older 65+ years
N	9169	4083	2642	2444
N Males	4383	1867	1292	1242
Mean FI	0.15 ± 0.12	0.08 ± 0.07	0.16 ± 0.11	0.24 ± 0.13
Range	0–0.77	0.00–0.65	0.00–0.68	0.01–0.77
99th Percentile	0.54	0.35	0.51	0.59
MICE	Overall	Younger 30–299 days	Middle-aged 300–599 days	Older 600+ days
N	251	251	229	158
N Observations	1032	495	228	309
Mean FI1	0.16 ± 0.12	0.05 ± 0.05	0.21 ± 0.04	0.29 ± 0.07
Range	0–0.55	0–0.22	0.13–0.32	0.16–0.55
99th Percentile	0.44	0.18	0.31	0.49

¹Values represent the mean ± SD.