. 2009 Oct 4;54(1):41–54. doi: 10.1093/annhyg/mep069

Table 2.

Correlation between log-transformed plasma HDA levels (μg) and inhalation or dermal HDI exposure (μg) ∼20 to 60 days prior to blood collection

Predictor variables	n^a	N^b	Pearson's r	95% CI^c	P-values
HDI unadjusted inhalation (μg)	26	29	0.57	0.14–0.78	0.0014
HDI adjusted inhalation (μg)	26	29	0.44	0.06–0.69	0.018
HDI dermal (μg)	26	29	0.36	−0.08 to 0.65	0.053

Number of workers.

Number of plasma samples.

95% confidence interval for Pearson's r.