Characterization and utilization of an international neurofibromatosis web-based, patient-entered registry: An observational study.

Differences among the median age at diagnosis were highly significant ( p < 0.001 for Kruskal-Wallis test among all 3 groups and Wilcoxon rank-sum test for subsequent pairwise comparisons among all pairs of disorders).

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Women were more likely to complain of facial weakness (60.1% of 346 women versus 51.9% of 233 men), but the difference fell just short of statistical significance (Chi-Square = 3.47, df = 1, p = 0.06).

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