Table 2 Univariate and multivariable logistic regression models of chronic bronchitis.

From: Association between systemic immune-inflammation index and chronic bronchitis: NHANES 2001–2018

Characteristics

No (N = 37,809)

Yes (N = 2326)

OR (univariable)

OR (multivariable)

SII

Mean ± SD

8.9 ± 0.8

9.1 ± 0.9

1.35 (1.28–1.42, p < .001)

1.37 (1.20–1.58, p < .001)

PLR

Mean ± SD

6.9 ± 0.5

7.0 ± 0.6

1.17 (1.08–1.26, p < .001)

0.87 (0.77–0.99, p = .028)

NLR

Mean ± SD

1.6 ± 0.4

1.7 ± 0.5

1.58 (1.45–1.73, p < .001)

0.94 (0.76–1.15, p = .526)

LMR

Mean ± SD

2.3 ± 0.4

2.3 ± 0.5

0.81 (0.74–0.90, p < .001)

1.08 (0.95–1.22, p = .246)

  1. PIR income-to-poverty ratio, BMI body mass index, CVD cardiovascular disease, SII systemic immune-inflammatory index, NLR (neutrophil-to-lymphocyte ratio), PLR (platelet-to-lymphocyte ratio), LMR (lymphocyte-to-monocyte ratio).
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