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Table 4 Binary logistic regression between independent variables at baseline and the course of Raynaud’s phenomenon

From: Incidence, remission, and persistence of Raynaud’s phenomenon in the general population of northern Sweden: a prospective study

Baseline variable

OR for incident Raynaud’s phenomenon

OR for remitted Raynaud’s phenomenon

Incident

Never

OR (95% CI) a

OR (95% CI) b

Remitted

Persistent

OR (95% CI) a

OR (95% CI) b

Age (years)

18–31

24

420

1.00

8

17

1.00

32–44

51

699

1.28 (0.77–2.11)

26

84

0.66 (0.26–1.70)

45–57

68

1282

0.93 (0.58–1.50)

53

182

0.62 (0.25–1.51)

58–70

65

1650

0.69 (0.43–1.11)

105

181

1.23 (0.51–2.95)

Continuous

0.99 (0.98–0.99)

1.02 (1.01–1.04)

BMI (kg/m2)

       

 < 20

13

139

1.44 (0.79–2.64)

1.52 (0.83–2.81)

4

31

0.35 (0.12–1.03)

0.40 (0.14–1.19)

20–25

101

1558

1.00

1.00

99

271

1.00

1.00

25–30

66

1617

0.63 (0.46–0.87)

0.62 (0.45–0.86)

62

133

1.28 (0.87–1.87)

1.18 (0.80–1.74)

 > 30

26

679

0.59 (0.38–0.92)

0.60 (0.38–0.93)

25

26

2.63 (1.45–4.77)

2.57 (1.41–4.70)

Continuous

0.94 (0.91–0.98)

0.94 (0.91–0.98)

1.10 (1.06–1.16)

1.10 (1.05–1.15)

Daily smoker

      

445

 

Never or former

197

3790

1.00

1.00

178

445

1.00

1.00

Current

11

241

0.88 (0.47–1.63)

1.00 (0.54–1.89)

13

17

1.91 (0.91–4.02)

1.87 (0.88–3.94)

Daily snuff user

Never or former

170

3516

1.00

1.00

165

386

1.00

1.00

Current

37

514

1.49 (1.03–2.15)

1.35 (0.93–1.96)

25

76

0.77 (0.47–1.25)

0.72 (0.43–1.19)

Hypertension

No

176

3064

1.00

1.00

130

377

1.00

1.00

Yes

28

945

0.52 (0.34–0.77)

0.56 (0.37–0.85)

61

84

2.11 (1.43–3.10)

1.88 (1.25–2.83)

Diabetes mellitus

No

199

3841

1.00

1.00

186

453

1.00

1.00

Yes

7

185

0.73 (0.34–1.57)

0.80 (0.37–1.73)

3

9

0.81 (0.22–3.03)

0.73 (0.19–2.76)

Migraines

No

188

3675

1.00

1.00

165

400

1.00

1.00

Yes

16

324

0.97 (0.57–1.63)

1.00 (0.59–1.71)

20

56

0.87 (0.50–1.49)

0.95 (0.54–1.64)

Psychological stress

Low

171

3208

1.00

1.00

143

360

1.00

1.00

High

37

816

0.85 (0.59–1.22)

0.85 (0.59–1.23)

48

101

1.20 (0.81–1.78)

1.29 (0.86–1.92)

Cold injury hands

No

169

3781

1.00

1.00

127

322

1.00

1.00

Yes

36

257

3.13 (2.14–4.59)

2.90 (1.97–4.27)

64

139

1.17 (0.81–1.67)

1.29 (0.88–1.89)

Work cold exposure

NRS 1

112

2348

1.00

1.00

98

254

1.00

1.00

NRS 2–10 c

87

1573

1.16 (0.87–1.55)

1.05 (0.78–1.42)

88

190

1.20 (0.85–1.69)

1.18 (0.82–1.69)

Continuous

1.04 (0.99–1.09)

1.02 (0.97–1.07)

1.05 (0.99–1.11)

1.05 (0.99–1.11)

Continuous working d

1.03 (0.97–1.08)

1.01 (0.96–1.07)

1.08 (1.01–1.15)

1.07 (1.01–1.14)

Leisure cold exposure

NRS 1–5

89

2039

1.00

1.00

75

199

1.00

1.00

NRS 6–10 c

115

1962

1.34 (1.01–1.78)

1.28 (0.97–1.71)

114

257

1.18 (0.83–1.66)

1.20 (0.85–1.70)

Continuous

1.07 (1.01–1.13)

1.06 (1.01–1.12)

0.99 (0.93–1.06)

1.00 (0.93–1.07)

  1. BMI body mass index, NRS numerical rating scale, OR odds ratio, 95% CI ninety–five percent confidence interval
  2. Crude estimate
  3. Adjusted for gender and age (continuous)
  4. Dichotomized based on the 50th percentile
  5. Only working subjects (N = 3843), excluding students, pensioners, unemployed, and those on sick or parental leave