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. Author manuscript; available in PMC: 2017 Aug 1.
Published in final edited form as: Indoor Air. 2015 Jul 8;26(4):594–604. doi: 10.1111/ina.12227

Table 1.

Study data sources. Data sources are used in both analyses unless otherwise annotated

Data source Variable Level of analysis/resolution
Patient care reports (PCR) Type of distress calla Individual
Age (years) Individual
Preexisting medical condition Individual
Gender Individual
US American Community Survey Population age >65 (%) Census tract or zip code
Living alone (%) Census tract or zip Code
All cause disability (%) Census tract or zip code
Vacant households (%) Census tract or zip code
Median household income (USD) Census tract or zip code
Households without plumbing (%) Census tract or zip code
Uninsured (%) Census tract or zip code
Black, Asian American, Hispanic (%) Census tract or zip code
National land cover database Canopy cover (%) 100 m or zip code
North American Land Data Outdoor surface temperature (°C) 14 km2
Assimilation system (NLDAS) Outdoor-specific humidityb (g/kg) 14 km2
Outdoor wind speedb (m/s) 14 km2
Outdoor solar radiationb (W/m2) 14 km2
HOBO (Onset) Data Loggers Indoor temperature (°C) Building
Indoor-specific humidity (g/kg) Building
The New York State Department of Environmental Conservation Outdoor ozonea (parts per 10 billion) 7 stations
Outdoor particulate matter 2.5 μma 4 stations
a

Data sources only used in the case–control study.

b

Data sources only used in the analysis of outdoor influences on indoor temperature or humidity.