Table 5.

Mean (Mn) and mode (Mo) values of the answers on noise annoyance related to the number of people in offices, and two-tailed p-value of significance of the difference between the number of people in offices, according to the KW Test. Statistically significant difference with p-value < 0.05 is reported in bold. The following abbreviations were used to indicate the type of office, on the basis of the number of people: S for “Shared office for two to five people”, MO for “Medium Open-plan office for six to 20 people”, LO for “Large Open-plan office for 21 to 200 people”.

Descriptive Statistics	Number of People in the Office			KW p-Value
	S (2–5) N = 597	MO (6–20) N = 467	LO (21–200) N = 14
Mn	2.54	3.05	3.71	0.00
Mo	2.00	3.00	3.00