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Table 3 Factors associated with urine volume [ml/24 h]

From: Factors associated with 24-hour urinary volume: the Swiss salt survey

N = 1254

Without Fluid Intake in the model

With Fluid Intake in the model

Beta (95% CI)

P value

Beta (95% CI)

P value

Fluid intake [Liter/day]

---

---

604.4 (539.3, 670.0)

<.0001

Age [years]

2.4 (−1.1, 5.9)

0.18

6.6 (3.4, 9.7)

<.0001

Female sex

230.8 (111.5, 350.0)

0.0002

280.4 (174.4, 386.4)

<.0001

Body mass index [kg/m2]

−30.6 (−46.1, -15.4)

0.0001

−31.7 (−45.4, -18.0)

<.0001

German-speaking cantons

306.6 (201.8, 411.4)

<.0001

124.0 (28.9, 219.0)

0.011

Diabetes medication

−18.8 (−280.7, 243.4)

0.89

34.8 (−197.8, 267.4)

0.77

Hypertension

−67.1 (−193.6, 59.4)

0.30

−51.4 (−163.6, 60.9)

0.37

Urinary creatinine excretion [mg/kg/24 h]

−24.9 (−42.7, -7.2)

0.0059

−16.0 (−31.8, -0.2)

0.047

Urinary sodium excretion [mmol/24 h]

4.5 (3.7, 5.4)

<.0001

4.2 (3.4, 4.9)

<.0001

Creatinine Clearance [ml/min]

3.4 (0.9, 5.9)

0.0083

2.4 (0.2, 4.6)

0.036

Current Smoking

−215.5 (−349.2, -81.0)

0.0017

−145.6 (−265.2, -26.1)

0.017

Past Smoking

7.8 (−100.7, 116.3)

0.89

5.9 (−90.4, 102.1)

0.91

Season

Spring

100.7 (−34.3, 235.8)

0.14

40.1 (−79.9, 160.1)

0.51

Summer

−20.4 (−149.5, 108.7)

0.76

−40.1 (−154.7, 74.4)

0.49

Winter

−93.3 (−240.0, 53.4)

0.21

−82.8 (−213.0, 47.4)

0.21

Education

    Secondary level

−37.7 (−199.8, 124.3)

0.65

−5.1 (−149.0, 138.7)

0.94

    Tertiary level

17.6 (−146.7, 181.9)

0.83

35.0 (−110.8, 180.8)

0.64

    Other

−23.8 (−282.3, 234.7)

0.86

−24.5 (−253.9, 204.9)

0.84

Cups of coffee per day

    1-3

120.4 (−57.1, 298.0)

0.18

112.0 (−45.6, 269.4)

0.16

    ≥4

226.2 (31.3, 421.1)

0.023

158.7 (−14.3, 331.8)

0.07

Alcohol consumption

    1 – 2 times/week

181.9 (43.5, 320.2)

0.010

173.7 (51.0, 296.5)

0.006

    > two days/week to daily

189.3 (27.1, 351.4)

0.022

188.1 (44.2, 332.0)

0.010

    twice daily or more

286.5 (51.0, 522.0)

0.017

338.5 (129.5, 547.6)

0.002

Vegetables

    1 – 2 portions daily

109.9 (−10.4, 230.1)

0.073

89.7 (−17.0, 196.4)

0.09

    ≥3 portions daily

242.1 (93.1, 391.2)

0.002

156.1 (23.5, 288.8)

0.02

Fruits and fruit juices

    1 – 2 portions daily

57.6 (−56.6, 171.8)

0.32

6.6 (−94.9, 108.0)

0.90

    >3 portions daily

133.2 (−7.9, 274.2)

0.06

52.0 (−73.4, 177.4)

0.42

Meat or cold cut

    2 – 4 days weekly

−184.5 (−323.7, -45.3)

0.009

−163.3 (−286.8, -39.8)

0.01

    >5 days weekly

−193.3 (−349.1, -37.5)

0.015

−221.9 (−360.1, -83.6)

0.002

  1. Data are parameter estimates and 95% confidence limits comparing factors associated with24 UV with and without consideration of fluid intake per day. The multivariate model was adjusted for age, sex, body mass index, urine creatinine excretion, urine sodium excretion, hypertension, diabetes, season, living in German- or not German-speaking cantons, education, creatinine clearance, smoking, alcohol and caffeine intake, portions of vegetables and fruits, and meat or cold cut intake per day (n = 1254). Reference groups as appropriate: Autumn, primary level of education, no caffeine consumption, less than one portion of vegetables and fruits daily, meat or cold cut once or less than once weekly.