Table 2. Smoking prevalence by sex and age in conditions of work.

Sex Age	Owner			Employed			Total
	N	Smoker	( % )	N	Smoker	( % )	N	Smoker	( % )
Male
-40 years	168	83	( 49.4 )	154	83	( 53.9 )	322	166	( 51.6 )
40-49 years	579	249	( 43.0 )	213	78	( 36.6 )	792	327	( 41.3 )
50-59 years	1,216	569	( 46.8 )	256	117	( 45.7 )	1,472	686	( 46.6 )
60-69 years	736	325	( 44.2 )	180	71	( 39.4 )	916	396	( 43.2 )
70+ years	345	110	( 31.9 )	157	52	( 33.1 )	502	162	( 32.3 )
Total	3,044	1,336	( 43.9 )	960	401	( 41.8 )	4,004	1,737	( 43.4 )
Age-Adjusted			( 44.6 )			( 43.3 )			( 44.6 )
Female
-40 years	13	2	( 15.4 )	23	3	( 13.0 )	36	5	( 13.9 )
40-49 years	17	1	( 5.9 )	14	0	( - )	31	1	( 3.2 )
50-59 years	24	3	( 12.5 )	19	2	( 10.5 )	43	5	( 11.6 )
60-69 years	40	5	( 12.5 )	11	0	( - )	51	5	( 9.8 )
70+ years	16	1	( 6.3 )	9	0	( - )	25	1	( 4.0 )
Total	110	12	( 10.9 )	76	5	( 6.6 )	186	17	( 9.1 )
Age-Adjusted			( 11.0 )			( 5.9 )			( 9.1 )
Both combined
-40 years	181	85	( 47.0 )	177	86	( 48.6 )	358	171	( 47.8 )
40-49 years	596	250	( 41.9 )	227	78	( 34.4 )	823	328	( 39.9 )
50-59 years	1,240	572	( 46.1 )	275	119	( 43.3 )	1,515	691	( 45.6 )
60-69 years	776	330	( 42.5 )	191	71	( 37.2 )	967	401	( 41.5 )
70+ years	361	111	( 30.7 )	166	52	( 31.3 )	527	163	( 30.9 )
Total	3,154	1,348	( 42.7 )	1,036	406	( 39.2 )	4,190	1,754	( 41.9 )
Age-adjusted			( 43.2 )			( 40.3 )			( 42.6 )

Owner: Owner of their own hospital or clinic, Employed: Employed physician, N: No. of subjects

Age-adjustment was calculated by direct method using National survey on circulatory disorder 1980 as standard.