Mis-anaesthetized society: expectancies and recreational use of ketamine in Taiwan

BMC Public Health

Table 1 Demographic characteristics and ketamine-using history of the RDS-sample in Taipei Metropolitan Area (N = 1115)

Variable	N^c	%_wt^d	95% CI
Gender
Male	689	57.2	(51.5–62.9)
Female	426	42.8	(37.1–48.5)
Education
< college	701	67.3	(62.7–72.8)
College and above	414	32.1	(26.8–37.3)
Employment
Full-time job	631	54.8	(48.6–60.5)
Work-study/in school	345	29.9	(24.5–35.6)
Part-time job/military	60	6.5	(4.5–8.6)
Unemployed	79	8.7	(5.9–12.6)
Early-onset^a tobacco use	406	32.0	(27.7–36.4)
Early-onset^a alcohol use^b	427	34.1	(30.1–38.5)
Age in years
Mean (SD)	1115	27.9	7.9
Median (25–75%)	1115	26.0	22.0–32.0
Age at first tobacco use
Mean (SD)	1040	16.7	3.6
Median (25–75%)	1040	16.0	14.0–18.0
Age at first alcohol use
Mean (SD)	1037	15.7	4.1
Median (25–75%)	1037	16.0	14.0–18.0

^aAn onset use age of < 16 years, which is the end of compulsory education up to middle school, is defined as early–onset use.
^bThree individuals were missing on the information on onset age of alcohol use.
^cSeeds are included in the numbers.
^dWeighted percentages and their 95% confidence intervals are RDS-adjusted population proportions estimated using the software RDSAT version 7.1.

ISSN: 1471-2458