Soil layer carbon stocks in six differently aged <i>Mytilaria laosensis</i> stands (a) and the linear relationship between soil carbon stocks and stand age (b).

<p>Values are means ±SE n = 12. Soil depth ranges in the key to (a) are in cm units.</p

Carbon contents by soil depth in six differently aged <i>Mytilaria laosensis</i> plantation stands (values are means ±SE, n = 12; g kg⁻¹).

<p>Carbon contents by soil depth in six differently aged <i>Mytilaria laosensis</i> plantation stands (values are means ±SE, n = 12; g kg⁻¹).</p

Individual biomass regressions models for <i>Mytilaria laosensis</i> trees (<i>n</i> = 18 for all models); <i>W</i>, biomass; <i>D</i>, DBH; <i>H</i>, height.

<p>Individual biomass regressions models for <i>Mytilaria laosensis</i> trees (<i>n</i> = 18 for all models); <i>W</i>, biomass; <i>D</i>, DBH; <i>H</i>, height.</p

Site properties and vegetation characteristics of the six plantation stands studied (values are means ±SE; n = 4).

<p>Site properties and vegetation characteristics of the six plantation stands studied (values are means ±SE; n = 4).</p

Carbon contents in the vegetation components and litter layers of six differently aged plantation stands (values are means ±SE; n = 4 g kg⁻¹).

<p>Carbon contents in the vegetation components and litter layers of six differently aged plantation stands (values are means ±SE; n = 4 g kg⁻¹).</p

Carbon stocks and their allocation in six differently aged <i>Mytilaria laosensis</i> stands (values are means ±SE, n = 4; t ha⁻¹).

<p>Carbon stocks and their allocation in six differently aged <i>Mytilaria laosensis</i> stands (values are means ±SE, n = 4; t ha⁻¹).</p

Description of study population.

<p>TB: tuberculosis.</p

Association between risk factors and positive T-SPOT.TB by means of univariate and multivariate analysis.

<p>OR: odds ratio; CI: confidence interval; TB: tuberculosis.</p>*<p>From a multivariate logistic regression model with age, gender, education, working years, job, workplace, the history of household TB contact.</p

Prevalence of LTBI in HCWs, stratified by age, working years, job, workplace, and the history of household TB contact.

<p>The circles and the lines represent the T-SPOT positive rates and 95% CIs, respectively. In univariable analysis, age (A), working years (B), job (C), workplace (D) and the history of household TB contact (E) were significantly associated with LTBI. LTBI: latent tuberculosis infection; HCWs: health care workers; TB: tuberculosis.</p

Study flow diagram.

<p>Of 828 HCWs, 787 HCWs answered the questionnaire and agreed to be tested for LTBI. 29 individuals with CT findings compatible with active TB and 3 individuals with TB history were excluded. 755 participants were eligible to be included in the final analyses. HCWs: health care workers; LTBI: latent tuberculosis infection; CT: computed tomography; TB: tuberculosis.</p