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Occurrence and severity of headache by sodium level and diet, n (%)
| Level of sodium |
||||||
|---|---|---|---|---|---|---|
| High |
Intermediate |
Low |
||||
| DASH (n=198) | Control (n=192) | DASH (n=198) | Control (n=192) | DASH (n=198) | Control (n=192) | |
| Mild | 60 (30) | 70 (36) | 43 (22) | 62 (32) | 53 (27) | 53 (28) |
| Moderate | 17 (9) | 17 (9) | 31 (16) | 16 (8) | 16 (8) | 21 (11) |
| Severe | 8 (4) | 4 (2) | 2 (1) | 1 (0.5) | 3 (1) | 1 (0.5) |
