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. Author manuscript; available in PMC: 2017 Dec 1.
Published in final edited form as: Ther Drug Monit. 2016 Dec;38(6):728–737. doi: 10.1097/FTD.0000000000000354

Table 1.

Cohort Demographics and Baseline Characteristics

Phenytoin Lamotrigine
N=93 Study Cohort
N=45
Rivas, et al. cohort
N=600
Male, % 51 51 56
Age, years* 61 (49, 71) 43 (31, 50) 38-39 (26.8, 51.3)**
Body weight, kg* 78 (67, 91) 78.5 (65.8, 99.3) 70.0-76.0 (61.8, 85.0)**
White race, % 53 64 NR
Hematocrit* 0.32 (0.27, 0.36) 0.36 (0.28, 0.41) NR
White blood cell count, ×103/ml* 9.80 (7.75, 12.85) 8.90 (5.70, 11.45) NR
Platelet count, ×103/ml* 208.5 (138.0, 276.5) 217.0 (140.5, 269.0) NR
Concomitant medication usage, %
    Carbamazepine 1.1 2.2 15
    Valproate 0 8.9 29
    Phenobarbital 7.5 0 5.1
    Diazepam 6.5 0 NR
    Clonazepam 14 0 NR
    Fluconazole 5.4 0 NR
    Phenytoin NA 6.7 NR

NA, not applicable; NR, not reported

*

Data presented as median (25th, 75th percentile)

**

Combined data from 2 cohorts were used in the study. Data presented as cohort 1 median – cohort 2 median, (25th, 75th percentile)