“…In Table 1, nine of 15 studies investigated the cost-effectiveness of IV rtPA therapy within 0–3 hours after stroke onset(9, 24, 26, 28, 30, 32, 35, 37, 38), two studies within 3–4.5 hours(25, 27), three studies within 0–4.5 hours(31, 34, 36), and one study within 0–6 hours(29, 33) (Figure 1). The first study that examined cost-effectiveness of IV rtPA was published in 1998, two years after the FDA approval.…”