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Table 1 Characteristics of all participants for BMI groups for each wave

From: What is the impact of underweight on self-reported health trajectories and mortality rates: a cohort study

 

Panel

<18.5

18.5-22.99

23-24.99

25-29.99

>30

P-value c

  

Kg/m2

Kg/m2

Kg/m2

kg/m2

kg/m2

 

Frequency

Tromsø 3

299

7075

4588

5226

945

 

Tromsø 4

327

6958

5789

9391

2730

 

Tromsø 5

86

1378

1534

3392

1484

 

Tromsø 6

80

1996

2175

5355

2454

 

SRH (% reporting good/very good)

Tromsø 3

75.4%

82.0%

82.4%

76.9%

68.3%

<0.001

Tromsø 4

54.8%

74.5%

74.1%

68.7%

54.9%

<0.001

Tromsø 5

41.3%

64.6%

68.5%

64.4%

54.0%

<0.001

Tromsø 6

46.6%

70.2%

71.9%

67.0%

53.9%

<0.001

Age (Mean)a

Tromsø 3

35.3

37.2

40.0

42.5

43.1

<0.001

Tromsø 4

49.5

44.1

46.7

50.1

53.2

<0.001

Tromsø 5

64.5

56.7

58.5

60.7

61.9

<0.001

Tromsø 6

63.4

56.5

57.4

59.0

59.1

<0.001

Gender (% male)

Tromsø 3

17.5%

35.6%

58.6%

67.5%

50.8%

<0.001

Tromsø 4

22.3%

33.5%

51.5%

58.3%

42.3%

<0.001

Tromsø 5

15.0%

31.1%

43.2%

50.6%

39.8%

<0.001

Tromsø 6

23.3%

29.5%

46.4%

54.1%

47.2%

<0.001

Comorbidity (mean HII)b

Tromsø 3

0.54

0.43

0.44

0.54

0.70

<0.001

Tromsø 4

1.26

0.78

0.82

1.04

1.39

<0.001

Tromsø 5

2.50

1.54

1.38

1.67

2.27

<0.001

Tromsø 6

2.53

1.44

1.40

1.57

2.11

<0.001

Mental distress (mean MHI/HSCL)b

Tromsø 3

.

.

.

.

.

 

Tromsø 4

1.66

1.54

1.51

1.50

1.54

<0.001

Tromsø 5

1.32

1.30

1.24

1.22

1.25

<0.001

Tromsø 6

1.43

1.31

1.28

1.27

1.31

<0.001

Resting heart rate (mean BPM)b

Tromsø 3

80.7

75.2

73.0

73.8

78.0

<0.001

Tromsø 4

76.9

72.8

71.2

72.1

75.8

<0.001

Tromsø 5

75.4

71.1

69.3

69.6

72.7

<0.001

Tromsø 6

70.3

64.7

63.5

64.7

67.6

<0.001

Systolic blood pressure (mean mmHG)

Tromsø 3

120.3

123.4

128.1

133.4

138.1

<0.001

Tromsø 4

129.5

127.5

133.1

139.4

148.2

<0.001

Tromsø 5

137.3

132.4

135.7

140.6

144.6

<0.001

Tromsø 6

132.3

129.0

132.3

138.3

142.1

<0.001

Total cholesterol (mean)

Tromsø 3

5.25

5.45

5.89

6.26

6.48

<0.001

Tromsø 4

5.72

5.65

5.99

6.35

6.59

<0.001

Tromsø 5

5.91

5.90

6.07

6.26

6.31

<0.001

Tromsø 6

5.53

5.45

5.59

5.69

5.61

<0.001

Physical activity (% inactive)

Tromsø 3

8.4%

10.8%

10.0%

11.0%

9.2%

0.255

Tromsø 4

64.3%

46.6%

45.1%

50.8%

62.7%

<0.001

Tromsø 5

48.5%

29.6%

30.8%

32.7%

37.5%

<0.001

Tromsø 6

31.7%

15.2%

17.1%

18.9%

30.3%

<0.001

Smoking habits (% daily smokers)

Tromsø 3

64.3%

50.4%

43.1%

41.0%

35.0%

<0.001

Tromsø 4

59.7%

44.4%

36.4%

31.3%

26.7%

<0.001

Tromsø 5

67.5%

41.2%

30.6%

24.7%

18.3%

<0.001

Tromsø 6

37.5%

26.3%

22.3%

17.7%

15.9%

0.003

  1. aTromsø 3 and 4 did not include subjects <25 years, Tromsø 5 &6 did not include subjects <30 years
  2. b HII Health impact index which measures comorbidity, MHI Mental health index (Tromsø 4), HSCL Hopkins symptoms checklist (Tromsø 5-6), BPM beats per minute
  3. cComparison of BMI groups were performed utilizing Kruskal-Wallis equality-of-populations rank test for gender, smoking habits and physical activity levels, and one-way anova for all other variables
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Health and Quality of Life Outcomes

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