Table 2 Logistic regression analysis and age-stratified analyses results for the association between serum hs-CRP levels and ED.

Q1 (<0.24 mg/L)

377

1

1

1

1

1

1

Q2 (0.24–0.53 mg/L)

372

1.19 (0.88, 1.61)

0.258

1.10 (0.80, 1.49)

0.563

1.08 (0.79, 1.48)

0.62

Q3 (0.54–1.22 mg/L)

380

1.47 (1.09, 1.98)

0.011

1.20 (0.88, 1.63)

0.257

1.19 (0.87, 1.64)

0.283

Q4 (>1.22 mg/L)

386

1.80 (1.35, 2.42)

<0.001

1.51 (1.12, 2.05)

0.008

1.50 (1.08, 2.08)

0.015

P-value for trend

<0.001

<0.001

0.003

Young group

(n = 985)

Q1 (<0.20 mg/L)

259

1

1

1

1

1

1

Q2 (0.21–0.47 mg/L)

243

1.18 (0.80, 1.74)

0.395

1.15 (0.78, 1.69)

0.44

1.18 (0.80, 1.75)

0.406

Q3 (0.48–1.16 mg/L)

246

1.40 (0.96, 2.04)

0.083

1.34 (0.91, 1.96)

0.137

1.41 (0.94, 2.10)

0.093

Q4 (>1.16 mg/L)

237

1.62 (1.11, 2.37)

0.012

1.56 (1.07, 2.28)

0.022

1.72 (1.13, 2.59)

0.011

Middle aged and elderly group

(n = 530)

Q1 (<0.32 mg/L)

132

1

1

1

1

1

1

Q2 (0.33–0.67 mg/L)

133

1.22 (0.75, 1.98)

0.42

1.21 (0.74, 1.99)

0.441

1.13 (0.68, 1.89)

0.628

Q3 (0.68–1.42 mg/L)

133

1.42 (0.87, 2.30)

0.157

1.30 (0.79, 2.13)

0.307

1.17 (0.70, 1.97)

0.553

Q4 (>1.42 mg/L)

132

2.46 (1.50, 4.04)

<0.001

2.31 (1.39, 3.84)

0.001

2.02 (1.18, 3.47)

0.011

P-value for trend

<0.001

<0.001

<0.001