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Table 2 Characteristics of participants

From: Effects of a community-based salt reduction program in a regional Australian population

 

Baseline

Follow-up

 

Random (n = 306)

Volunteer (n = 113)

Random followed from baseline (n = 101)

Random new (n = 106)

Volunteer followed from baseline (n = 36)

Volunteer new (n = 329)

P value*

Female (%)

53

61

56

61

61

58

0.25

Age, years range (mean)

20–88 (58)

20–84 (49)

29–90 (64)

21–90 (60)

22–83 (60)

20–89 (52)

0.49‡

Height, cm mean (SD)

168 (10)

167 (8.8)

166 (9.6)

166 (10.2)

168 (8.9)

167 (10)

0.38

Weight, kg mean (SD)

82 (17.1)

84 (20.6)

82 (16.9)

84 (24.1)

86 (26)

82 (19.9)

0.90

BMI, kg/m2 mean (SD)

29 (5.1)

30 (6.6)

29 (5.9)

30 (7.0)

30 (8.3)

29 (6.6)

0.45

Systolic bp, mmHg mean

127

124

127

133

131

126

0.10

Diastolic bp, mmHg mean

79

79

78

81

82

80

0.27

Creatinine mmol mean (SD)

12.0 (3.8)

12.0 (4.2)

11.0 (3.6)

12.0 (4.3)

12 (3.8)

12 (4.4)

0.31

Urine volume, ml mean (SD)

1930 (808)

2012 (868)

1957 (859)

2082 (875)

1867 (747)

1930 (823)

0.94

Education (%)

      

0.01

Secondary

64

56

55

49

50

45

 

Tertiary

26

33

40

46

44

47

 

Postgraduate

10

12

5

5

6

8

 

Health Status (%)

Very good

50

49

33

30

19

31

0.12

Good

30

24

42

44

42

43

 

Fair

20

27

25

26

39

26

 

Smoking status (%)

Current smoker (>1/day)

8

22

7

6

14

18

0.67

Ever smoked (>1/day)

41

53

37

39

50

42

 

Alcohol consumption (time since last drink) One week or less

62

43

58

58

40

53

 

12 months or more

38

57

42

42

60

47

0.20

Have you ever been told by a nurse of doctor that you have (%)

High blood pressure

44

30

55

42

50

40

0.02

Heart attack

8

4

11

9

6

3

0.62

Stroke

4

2

6

3

3

2

0.57

Angina

7

4

8

7

11

5

0.93

Diabetes

11

7

13

15

11

11

0.25

Prescription Medication † (%)

Antihypertensive

22

20

37

31

26

23

0.03

Lipid lowering

16

18

30

22

14

17

0.20

Aspirin

8

3

21

14

9

8

0.01

Glucose lowering

5

9

9

11

12

7

0.13

Any prescription medication

66

53

79

83

60

60

0.10

  1. *Age comparison presented is for the new random and volunteer sample with the baseline sample, excluding paired participants (the same random and volunteer sample sampled at baseline at follow-up)
  2. †Participants could be taking more than one prescribed medication
  3. ‡ p-value compared mean values across all baseline vs. all follow-up
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BMC Public Health

ISSN: 1471-2458

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