Table 1 Characteristics of the study population stratified according to gender

From: Oral polymorphonuclear neutrophil characteristics in relation to oral health: a cross-sectional, observational clinical study

Parameters

Total (n=268)

Males (n=150)

Females (n=118)

P-value*

Adjusted P-value†

Dental characteristics (%)

 Plaque

33.3±21.1 (0.0–100.0)

37.9±21.5 (1.2–100.0)

27.3±19.1 (0.0–90.5)

<0.001

 

 BOMP

20.1±12.4 (1.2–64.3)

21.2±13.3 (1.2–64.3)

18.6±11.1 (1.2–52.4)

0.081

 

Counts (× 106)

 oPMNs‡

1.1±0.9 (0.07–7.7)

1.2±1.0 (0.07–7.7)

1.0±0.7 (0.09–4.1)

0.015

0.231

 cPMNs§

8.4±6.2 (0.9–82.0)

7.5±6.7 (0.9–82.0)

9.5±5.3 (1.1–32.8)

0.008

0.042

  1. BOMP, bleeding on marginal probing; cPMN, circulatory polymorphonuclear neutrophils; oPMN, oral polymorphonuclear neutrophils.
  2. Results for dental characteristics and counts of oPMNs and cPMNs. Values represent means±standard deviations (range).
  3. *Independent t-tests, P-values≤0.007 were considered statistically significant and are shown in bold.
  4. †Multivariate analysis of covariance, using donor gender as a fixed factor and participant age, mean plaque and BOMP scores as covariates. Adjusted P-values≤0.007 were considered statistically significant.
  5. ‡Total oPMNs collected after 4 × 30 s rinsing with 4.5-min intermission, after the isolation and purification steps.
  6. §Total cPMNs obtained from a 6 mL tube of blood, after the isolation and purification steps.
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