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. Author manuscript; available in PMC: 2016 Jan 1.
Published in final edited form as: Genet Med. 2014 Jun 5;17(1):36–42. doi: 10.1038/gim.2014.70

Table 3.

Differences in sex and mean age at for first healthcare claim between the NF1 and non-NF1 groups by medical condition.

Females with medical condition Age at first healthcare claim for conditiona
Medical condition (Number of cases in NF1/non-NF1 group, respectively) NF1 group (% female)b Non-NF1 group (% female)b P-valuec NF1 group mean (SD) Non-NF1 group mean (SD) P-valuee
Epilepsy (467, 536) 48.8 50.8 0.5433 27.1 (18.5) 27.6 (19.7) 0.9806
Headache (including migraine) (921, 2592) 64.6 73.2 <0.0001 29.9 (17.3) 34.2 (16.7) <0.0001
Migraine (345, 1010) 71.2 74.5 0.1324 31.0 (15.5) 36.4 (15.4) <0.0001
Multiple sclerosis (25, 108) 60.0 78.7 0.0510 45.2 (10.4) 44.9 (12.4) 0.9039
Parkinson's disease (7, 19) 42.9 47.4 1.0d 56.0 (5.2) 53.9 (12.5) 0.9771
Sleep disturbances/disorder (311, 1499) 47.3 46.4 0.7715 41.2 (17.4) 44.4 (15.4) 0.0416
UTI (1171, 8055) 77.5 84.5 <0.0001 35.2 (19.4) 32.4 (19.4) <0.0001
Diabetes (201, 3167) 50.3 48.9 0.7194 50.4 (12.0) 50.2 (11.8) 0.6566

N, number; NF1, neurofibromatosis type 1; SD, standard deviation

a

Age was estimated as the difference between the year of the healthcare claim for the condition during 2006-2010 and the patient's birth year

b

Percent female in NF1/non-NF1 group in those with medical condition listed in column 1.

c

Chi-square test p-value

d

Fisher's exact test two-sided p-value

e

Based on Wilcoxon Two-sample Test (T-approximation)