Table 1.

Characteristics of the study population

CharacteristicTotal cohortAntithrombin cohortProtein C cohortProtein S cohort
DeficientNondeficientDeficientNondeficientDeficientNondeficientDeficientNondeficient
Subject, n 70 64 22 16* 29 22 19 26§ 
Male sex, n (%) 35 (50) 34 (51) 12 (54) 7 (43.7) 16 (55) 13 (59) 6 (32) 14 (50) 
Median age at enrollment (range), y 12 (1-17) 13 (5-17) 12 (5-16) 13 (8-17) 12 (2-17) 14 (5-16) 12 (6-17) 14 (5-17) 
Observation years 287 248       
Mean length of follow-up (range), y 4 (1-16) 3.9 (1-13)       
CharacteristicTotal cohortAntithrombin cohortProtein C cohortProtein S cohort
DeficientNondeficientDeficientNondeficientDeficientNondeficientDeficientNondeficient
Subject, n 70 64 22 16* 29 22 19 26§ 
Male sex, n (%) 35 (50) 34 (51) 12 (54) 7 (43.7) 16 (55) 13 (59) 6 (32) 14 (50) 
Median age at enrollment (range), y 12 (1-17) 13 (5-17) 12 (5-16) 13 (8-17) 12 (2-17) 14 (5-16) 12 (6-17) 14 (5-17) 
Observation years 287 248       
Mean length of follow-up (range), y 4 (1-16) 3.9 (1-13)       
*

Two with Factor V Leiden mutation.

Four with Factor V Leiden mutation.

One with G20210A prothrombin variant.

§

One with Factor V Leiden mutation.

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