Importance-Performance Analysis of Prefabricated Building Sustainability: A Case Study of Guangzhou

Table 4

Background information of respondents.

Item	Total sample (n = 224)
	Number	Percentage (%)
Sex
Male	141	62.95
Female	83	37.05
Age
25 and lower	2	0.89
26–35	92	41.07
36–45	45	20.09
46–55	39	17.41
56 and higher	46	20.54
Educational level
High school and below	41	18.30
Junior college	44	19.64
Undergraduate	64	28.57
Master	47	20.98
Doctor	28	12.50
Work unit
Government	16	7.14
Owner	29	12.95
Construction	34	15.18
Survey and design	38	16.96
Supervision	12	5.36
Consulting	34	15.18
Colleges and universities	9	4.02
Prefabricated factory	17	7.59
Others	35	15.63
Working time in the field of construction engineering
5 and lower	47	20.98
6–10	90	40.18
11–15	20	8.93
16–20	11	4.91
21–25	19	8.48
26 and higher	37	16.52
Prefabricated building participation time
0	46	20.54
1–2	39	17.41
3–5	83	37.05
6–10	33	14.73
11–15	6	2.68
16–20	7	3.13
21–25	4	1.79
26 and higher	6	2.68