Table 3.
Association Between Levels of Salt Intake, Patient Characteristics, and BP
| Sociodemographic Characteristics | Crude | Adjusted | |||
|---|---|---|---|---|---|
| No. | Mean (95% CI) | P Value | Mean (95% CI) | P Value | |
| Region | |||||
| Urban | 26 | 5.97 (4.73–7.20) | .0293 | 5.83 (4.29–7.37) | .0695 |
| Rural | 267 | 7.22 (6.82–7.62) | 7.12 (6.73–7.52) | ||
| Sex | |||||
| Men | 122 | 7.63 (6.96–8.30) | .0014 | 7.02 (5.93–8.11) | .0122 |
| Women | 171 | 6.39 (6.05–6.72) | 5.93 (5.17–6.70) | ||
| Age, y | |||||
| 18–44 | 203 | 7.38 (6.59–8.18) | .0986 | 6.43 (5.28–7.57) | .0654 |
| 45–64 | 90 | 6.33 (5.67–6.99) | 5.21 (3.98–6.43) | ||
| Age continuous (/5 y) | −0.04 (−0.10 to 0.01) | .1012 | −0.05 (−0.10 to 0.00) | .0567 | |
| Education | |||||
| Primary school or less completed | 51 | 7.46 (5.26–9.66) | .9385 | ||
| Secondary school completed | 151 | 7.07 (5.90–8.24) | |||
| Post‐secondary/university | 37 | 7.40 (5.18–9.63) | |||
| Employment status | |||||
| Employed/domestic duties | 133 | 7.09 (6.22–7.96) | .3016 | ||
| Unemployed/student | 104 | 7.37 (6.68–8.06) | |||
| BMI, kg/m2 | |||||
| Underweight/normal | 34 | 6.40 (5.36–7.44) | .0222 | 5.15 (4.00–6.30) | .0004 |
| Overweight/obese | 251 | 7.25 (6.82–7.68) | 6.49 (5.64–7.33) | ||
| BMI continuous | −0.06 (−0.10 to −0.02) | .0108 | −0.02 (−0.05 to 0.01) | .1663 | |
| BP, mm Hg | |||||
| Systolic BP <140 and diastolic BP <90 | 205 | 7.35 (6.46–8.23) | .2080 | ||
| Systolic BP ≥140 or diastolic BP ≥90 | 50 | 6.40 (5.56–7.24) | |||
| Systolic BP continuous (/10 mm) | −0.02 (−0.06 to 0.02) | .2057 | |||
Abbreviation: CI, confidence interval. The multivariate (adjusted) regression includes variables with a P value <.2 in the unadjusted analysis. This version includes the continuous forms for age, body mass index (BMI), and blood pressure (BP). The coefficients for these variables represent a change in salt excretion according to the units on the table.