Table 6.

Prevalence of betel nut chewing history and betel nut chewing years according to the sum of components of MetS.

	0	1	2	3	4	5	p
All participants (n = 121,423)	n = 34,569	n = 33,492	n = 25,982	n = 16,697	n = 8166	n = 2417
Betel nut chewing history (%)	3.3	4.8	6.8	9.7	11.5	11.4	<0.001
All participants with betel nut chewing history (n = 7355)	n = 1144	n = 1607	n = 1759	n = 1621	n = 936	n = 288
Betel nut chewing years	12.4 ± 10.7	13.2 ± 10.6	14.4 ± 11.3	15.1 ± 11.4	15.8 ± 11.2	15.7 ± 1.0	<0.001
Follow-up participants without baseline MetS (n = 21,150)	n = 6039	n = 6940	n = 5173	n = 2235	n = 651	n = 112
Betel nut chewing history (%)	3.8	5.1	6.4	7.6	8.8	7.1	<0.001
Follow-up participants without baseline MetS with a betel nut chewing history (n = 1146)	n = 220	n = 343	n = 321	n = 158	n = 76	n = 28
Betel nut chewing years	12.7 ± 10.0	14.8 ± 11.0	14.9 ± 11.9	17.5 ± 12.4	17.5 ± 10.8	15.3 ± 13.1	0.001

Abbreviations. MetS, metabolic syndrome.