Table 1

Relative risks for gastric cancer among men and women by occupational sector (1 digit), 1971–89

		General cohort			Same occupation in 1960–70
Code	Occupational sector	Cases	RR*	95% CI	Cases	RR*	95% CI
*Adjusted for age, period, and geographical risk area.
Men:
0	Professional and technical work	1089	0.77	0.73 to 0.82	522	0.76	0.70 to 0.84
1	Administrative and managerial	242	0.70	0.61 to 0.79	91	0.70	0.57 to 0.86
2	Bookkeeping and clerical work	344	0.93	0.83 to 1.03	85	0.91	0.73 to 1.13
3	Sales work	546	0.89	0.81 to 0.97	217	0.83	0.73 to 0.95
4	Agricultural, forestry and fishing	1199	1.04	0.98 to 1.11	875	1.05	0.97 to 1.13
5	Mining and quarrying	83	1.55	1.25 to 1.93	40	1.91	1.40 to 2.61
6	Transport and communications	718	1.03	0.95 to 1.11	433	1.04	0.94 to 1.14
7–8	Production I or II	4063	1.18	1.13 to 1.23	1887	1.15	1.08 to 1.22
9	Services and military work	479	1.04	0.95 to 1.14	240	1.05	0.93 to 1.20
Women:
0	Professional and technical work	435	0.85	0.77 to 0.95	162	0.85	0.71 to 1.01
1	Administrative and managerial	24	0.80	0.53 to 1.19	5	1.28	0.53 to 3.09
2	Bookkeeping and clerical work	429	0.96	0.87 to 1.07	93	1.02	0.82 to 1.27
3	Sales work	316	0.85	0.75 to 0.95	91	0.73	0.59 to 0.91
4	Agricultural, forestry and fishing	179	1.09	0.94 to 1.27	23	1.30	0.86 to 1.97
5	Mining and quarrying	0	–	–	0	–	–
6	Transport and communications	87	0.97	0.79 to 1.21	33	1.08	0.76 to 1.54
7–8	Production I or II	380	1.12	1.01 to 1.25	103	1.12	0.90 to 1.38
9	Services and military work	875	1.15	1.06 to 1.25	193	1.25	1.06 to 1.48