Table 2 Predictive factors of sodium intake measured by 24-h urinary excretion based on simple linear regression analysis

 Male^r

0.0 (0.00, 0.00)

0.000

 Female

− 598.01 (− 791.85, − 404.17)

0.001*

 18–39^r

0.0 (0.00, 0.00)

0.000

 40–59

− 20.70 (− 218.47, 177.05)

0.837

 60+

− 232.88 (− 453.08, − 12.67)

0.038*

 Never married^r

0.0 (0.00, 0.00)

0.000

 Married

209.55 (− 15.26, 434.36)

0.068

 Separated/widower

− 363.71 (− 504.59, − 222.83)

0.001*

 None^r

0.00 (0.00, 0.00)

0.000

 Primary

− 98.10 (− 338.78, 142.58)

0.424

 Secondary

82.61 (− 113.53, 278.76)

0.409

 Tertiary

223.83 (− 8.204, 455.85)

0.059

 Public sector^r

0.0 (0.00, 0.00)

0.000

 Private sector

181.21 (− 87.07, 449.50)

0.185

 Self-employed

107.27 (− 10.13, 224.67)

0.073

 Housewives

− 115.09 (− 188.36, − 41.82)

0.002*

 Unemployed

− 60.24 (− 130.60, 10.11)

0.093

 < 1000^r

0.0 (0.00, 0.00)

0.000

 1000–3999

76.86 (− 119.50, 273.22)

0.443

 > 4000

253.48 (22.03, 484.92)

0.032*

  < 90^r

0.0 (0.00, 0.00)

0.000

  ≥ 90

769.64 (451.40, 1087.87)

0.001*

  < 80^r

0.0 (0.00, 0.00)

0.000

  ≥ 80

444.53 (181.10, 707.95)

0.001*

 Normal^r

0.00 (0.00, 0.00)

0.000

 Underweight

− 855.54 (− 1329.98, − 381.10)

0.001*

 Overweight

51.79 (− 50.22, 153.82)

0.319

 Obese

186.56 (111.15, 261.97)

0.001*