| Age Groups | N | Flow Rate ml/min Mean (SD) (Min-Max) |
|---|---|---|
| 30-34 | 23 | 1.4 (0.6) (0.5-3.0) |
| 35-39 | 28 | 1.8 (0.7) (0.8-3.4) |
| 40-44 | 44 | 1.4 ( 0.6) (0.6-3.2) |
| 45-49 | 54 | 1.4 (0.6) (0.4-3.1) |
| 50-54 | 69 | 1.6 (0.8) (0.3-4.0) |
| 55-59 | 37 | 1.6 (0.7) (0.4-3.2) |
| Total | 255 | 1.5 (0.7) (0.3-4.0) |