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. 2020 Sep 28;18(12):3203–3210. doi: 10.1111/jth.15076

Table 2.

Median age at first 20 exposures to FVIII concentrates stratified for FVIII activity and for treatment indication

Baseline FVIII:C, IU/dL Treatment indication

Age at ED1

N = 104

Age at ED5

N = 95

Age at ED10

N = 82

Age at ED15

N = 68

Age at ED20

N = 52

Moderate, 2‐5 N = 48 All 4.5 (1.4‐7.5) 5.2 (3.2‐9.4) 5.9 (3.8‐10.7) 7.6 (3.8‐11.2) 10.9 (4.9‐14.2)
N = 41 Bleeds 3.2 (1.4‐7.4) 4.8 (2.7‐8.7) 5.1 (2.5‐9.5) 5.2 (3.3‐10.9) 9.1 (4.7‐12.3)
Mild, 5‐40 N = 56 All 3.8 (1.3‐8.4) 5.7 (2.8‐9.1) 8.6 (4.4‐11.7) 9.0 (5.8‐12.8) 9.6 (6.7‐14.3)
N = 48 Bleeds 4.0 (2.2‐8.8) 7.7 (3.9‐12.5) 9.6 (5.8‐14.6) 10.3 (7.3‐14.2) 10.8 (8.5‐15.5)
Total, 2‐40 N = 104 All 4.0 (1.4‐7.6) 5.6 (2.9‐9.3) 7.5 (4.4‐11.3) 8.9 (4.9‐12.1) 10.2 (6.5‐14.2)
N = 89 Bleeds 3.9 (1.5‐7.6) 5.8 (3.5‐11.0) 7.6 (4.3‐12.0) 9.0 (4.9‐13.0) 10.2 (7.1‐13.0)

Values are given in medians (interquartile ranges).

Abbreviation: ED, exposure day; FVIII, factor VIII.