TABLE 1:
Normal reference values for mean MCA and ICA blood flow velocities by age group
| Mean Velocity (cm/s) | Age Group |
Between-Group Differences | |||
|---|---|---|---|---|---|
| All | I (<40 y) | II (40–60 y) | III (>60 y) | ||
| All subjects (n = 304) | |||||
| MCA | 71 (35–107)** | 78 (44–112) | 70 (36–104) | 57 (32–82) | I vs II†, II vs III†, I vs III† |
| ICA | 39 (18–60)** | 43 (28–61) | 38 (16–60) | 33 (16–50) | I vs II†, II vs III†, I vs III† |
| Women (n = 193) | |||||
| MCA | 75 (39–111)** | 80 (45–115)‡ | 74 (41–107) | 58 (31–85) | II vs III†, I vs III† |
| ICA | 42 (20–64)* | 45 (28–62)‡ | 42 (17–67) | 31 (12–50) | I vs II†, II vs III†, I vs III† |
| Men (n = 111) | |||||
| MCA | 64 (32–96)** | 71 (40–102) | 65 (32–98) | 56 (31–81) | I vs III† |
| ICA | 34 (20–48)* | 35 (21–49) | 34 (20–48) | 34 (20–48) | Not significant |
*
Age dependence, P < .05.
**
Age dependence, P < .001.
†
All P < .05.
‡
Sex dependence, P < .05.