. Author manuscript; available in PMC: 2022 Oct 19.

Published in final edited form as: Am J Ophthalmol. 2020 Oct 14;223:193–204. doi: 10.1016/j.ajo.2020.10.003

TABLE 2.

Indoor Environment Conditions and Home Characteristics

Variable	N	Mean	SD	Min	Max

CFU (soy)	200	85.9	90.2	0	932
CFU (nut)	202	67.3	51.7	0	288
Temperature (F)	240	23.9	2.2	18.4	29.7
Relative humidity (%)	215	51.3	8.5	34.0	77.8
PM_2.5	239	4.0	9.2	0	63.7
PM₁₀	239	11.4	14.4	0	84.3
Total suspended particles	239	18.1	19.4	0	98.7
Year built	172	1975.8	22.9	1920	2018
Square footage	162	1660.6	1105.3	150	7500

CFU = colony-forming units, PM_2.5 = particulate matter ≤2.5 μm, PM₁₀ = particulate matter ≤10 μm.