Table 2. TTR and INR included in TTR analysis.

	Long-term warfarin-treated patients (n=1,230)
Mean TTR (95% CI)	49.1 (47.9–50.3)
TTR quartiles, %
1st quartile	<34.5
2nd quartile	34.5–49.1
3rd quartile	49.1–64.5
4th quartile	>64.5
INR, mean	2.25±0.89
INR 2.0–3.0, %	44.6
INR range, %
<1.50	16.5
1.50–1.99	25.2
2.00–2.49	27.8
2.50–3.00	16.7
3.01–3.50	7.3
3.51–4.00	3.1
>4.00	3.3

Data are mean (95% CI), mean±SD, or % values.

INR: international normalized ratio, TTR: time in therapeutic range.