Table 3.

Odd ratios for smoking among call center female workers according to work-related characteristics

Variables	Unadjusted OR	95% CI	aAdjusted OR	95% CI
Emotional labor
KELS-1, risk	1.37	0.59–3.20	0.87	0.34–2.23
KELS-2, risk	1.75	0.95–3.21	1.06	0.49–2.23
KELS-3, risk	2.12	1.16–3.87	1.77	0.82–3.80
KELS-4, risk	1.81	0.98–3.35	1.28	0.61–2.65
KELS-5, risk	2.03	0.77–5.32	1.19	0.40–3.55
Workplace violence
KWVS-1, risk	1.45	0.73–2.88	1.04	0.47–2.31
KWVS-2, risk	2.47	1.24–4.95	2.21	0.94–5.21
KWVS-3, risk	1.14	0.45–2.86	0.53	0.17–1.60
KWVS-4, risk	1.42	0.71–2.82	0.98	0.45–2.13
Work conditions
Employment type, Informal	1.09	0.59–2.02	0.85	0.42–1.69
Working hours,
< 40 (hours/week)	1		1
40–49 (hours/week)	4.15	1.44–11.92	3.50	1.04–11.80
≥ 50 (hours/week)	8.90	2.24–35.32	8.68	1.89–39.78
Annual salary, ≥21.4 million (KRW)	3.49	1.05–11.59	1.63	0.41–6.49
Employment period, ≥5 (years)	1.04	0.57–1.88	0.74	0.39–1.42
Demographic characteristics
Age, ≥40(years)	1.5	0.41–5.44	2.48	0.56–10.96

^aAdjusted by each items of emotional labor and working violence, working condition such as employment type, annual salary, employment period, and age