Table 3

OR of headaches by diet and sodium sequence

OR (95%CI)p Value
Sodium effects on the DASH diet
 Intermediate vs high sodium0.72 (0.51 to 1.01)0.06
 Low vs intermediate sodium0.96 (0.68 to 1.37)0.85
 Low vs high sodium0.69 (0.49 to 0.98)0.04
Sodium effects on the control diet
 Intermediate vs high sodium0.81 (0.57 to 1.15)0.24
 Low vs intermediate sodium0.86 (0.59 to 1.24)0.42
 Low vs high sodium0.69 (0.49 to 0.99)0.05
Diet effects (DASH vs control) at each sodium level
 On high sodium0.65 (0.37 to 1.12)0.12
 On intermediate sodium0.57 (0.29 to 1.12)0.10
 On low sodium0.64 (0.36 to 1.13)0.12
Low sodium on DASH vs high sodium on control0.64 (0.14 to 0.99)0.05
  • Models adjusted for age, sex, race, site, systolic blood pressure, body mass index, smoking status and carryover effects from the previous period.