Table 1 The multicollinearity test was conducted for all variables in the models

Crude

ref

0.74(0.61,0.89)

0.54(0.42, 0.70)

0.0015*

0.0045*

 < 0.0001*

Model 1^c

ref

0.82(0.69, 0.96)

0.74(0.57, 0.98)

0.030*

0.032*

0.016*

Model 2^d

ref

0.79(0.66, 0.95)

0.69(0.50, 0.96)

0.032*

0.032*

0.013*

Potassium Intake(mg)

T1

T2

T3

Crude

ref

0.81(0.70, 0.95)

0.65(0.54, 0.78)

 < 0.0001*

 < 0.0001*

 < 0.0001*

Model 1^c

ref

0.93(0.81, 1.06)

0.78(0.66, 0.92)

0.012*

0.018*

0.0028*

Model 2^e

ref

0.91(0.78, 1.06)

0.74(0.59, 0.93)

0.038*

0.038*

0.0091*

Ratio of sodium to potassium

T1

T2

T3

Crude

ref

0.93(0.76, 1.13)

1.07(0.89, 1.29)

0.34

0.225

0.5

Model 1^c

ref

0.98(0.80, 1.19)

1.15 (0.97, 1.37)

0.15

0.225

0.13

Model 2^f

ref

0.98(0.81, 1.20)

1.16(0.97, 1.37)

0.14

0.34

0.11