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. 2019 Aug 21;5(8):eaaw7195. doi: 10.1126/sciadv.aaw7195

Table 1. Participants’ characteristics.

Participants included 72 female premutation carriers with 55 to 125 CGGs, 507 female controls with 24 to 40 CGGs, 26 male premutation carriers with 55 to 96 CGGs, and 494 male controls with 24 to 40 CGGs. Female deceased: premutation carriers = 5 and control group = 40. Male deceased: premutation carriers = 3 and control group = 68.

Premutation carriers Controls
Variable Range Mean Range Mean P value
Females Year of birth* 1918–1987 1957.74 1911–1988 1956 0.62
Duration of
receiving care
from Marshfield*		 3–40 32.47 1–40 31.96 0.67
Number of
medical
encounters 		12–1114 268.55 3–1652 300.28 0.26
Number of
SNOMED codes 		21–2985 748.77 10–6130 859.54 0.24
Unique SNOMED
codes 		10–369 151.80 5–482 159.45 0.47
SNOMED codes/
years in the
system 		1.17–218 28.44 0.59–234.9 27.79 0.85
Number of
medical
encounters/years
in the system 		0.67–54.11 9.57 0.30–64.64 9.63 0.95
Males Year of birth* 1912–1988 1956 1911–1988 1956.06 0.99
Duration of
receiving care
from Marshfield*		 2–40 28.5 1–40 31.26 0.12
Number of
medical
encounters 		16–703 197.92 4–1617 246.94 0.29
Number of
SNOMED codes 		20–2335 608.85 7–6416 745.89 0.43
Unique SNOMED
codes 		9–306 115.65 5–495 132.20 0.35
SNOMED codes/
years in the
system 		0.67–59.87 21.10 0.48–195.46 24.14 0.57
Number of
medical
encounters/years
in the system 		0.53–18.02 7.12 0.38–44.08 8.02 0.53

*Cases and controls were matched on year of birth and duration of receiving care from Marshfield.