The Association between Indoor Carbon Dioxide Reduction by Plants and Health Effects

Table 1

Summary statistics for the blood pressure, serum CO₂, 8-hour mean indoor CO₂, air pollution and weather, and the between-group comparisons between the office room with plants and office room without a plant.

	With plants	Without plant	-test; value
CO2, ppm
			<0.01
IQR	342	823
PM2.5, μg/m^3
			0.03
IQR	4.7	5.6
TVOCs, ppb
			0.67
IQR	28.4	26.2
Temperature, °C
			0.87
Humidity, %
			0.79
Serum CO2, mmol/L
			0.04
SBP, mmHg
			0.04
DBP, mmHg
			0.08
Headache
			0.54
Dyspnea
			0.76
Fatigue
			0.61
Drowsiness
			0.04