Table 1.

Descriptive Results of Adipogenic Activity Across Dust Extracts

Dust Sample Metrics	N	Range	Median	Mean
Dust extract concentrations (μg/mL)
Overall	188	8.5–196.7	88.5	91.9
Lower tertile	62	8.5–74.9	53.1	52.3
Middle tertile	63	75.5–100.9	88.4	88.6
Upper tertile	63	101.0–196.7	125.3	134.3
Dust-induced triglyceride accumulation (%)
Overall	188	0.0–85.29	6.6%	19.6%
Inactive samples	80	0.0–4.86	0.8%	1.4%
Lower tertile	36	5.0–11.0	6.8%	7.3%
Middle tertile	36	11.0–29.3	18.0%	19.1%
Upper tertile	36	30.0–152.8	69.3%	73.1%
Dust-induced cell proliferation (%)
Overall	188	0.0–85.3	7.2%	9.4%
Inactive samples	95	0.0–7.0	2.2%	2.3%
Lower tertile	31	7.3–10.0	9.0%	8.9%
Middle tertile	31	10.2–15.9	12.9%	12.9%
Upper tertile	31	16.1–85.3	19.6%	27.7%

Descriptive statistics for dust extract concentrations and adipogenic activity metrics (both triglyceride accumulation and pre-adipocyte proliferation) for n=188 samples. Tertiles defined based on dust extract concentrations across groups. Dust extract concentrations provided as test concentration, and many samples were diluted to achieve approximate concentrations of 100 μg/mL.