The results show that mean Ts - SD 12 is 43.16 ± 22.19 ms, mean Ts - Diff 12 is 121.81 ± 49.81 ms.
Kết quả nghiên cứu cho thấy Ts – SD 12 trung bình là 43,16 ± 22,19 ms, Ts - Diff 12 trung bình là 121,81 ± 49,81 ms.