An analysis of esophageal cancer incidence in Cixian county from 1974 to 1996

Table 1 Cixian EC incidence rate state from 1974 to 1996

Year	Male				Female
	Population	Case	Incidence rate	ASR	Population	Case	Incidence rate	ASR
74	221842	450	202.85	281.81	217799	279	128.10	157.96
75	224063	392	174.95	244.74	220937	279	126.28	162.8
76	226098	407	180.01	247.68	222526	236	106.06	131.44
77	227998	335	146.93	195.17	224094	193	86.12	103.31
78	227677	320	140.55	186.94	228524	191	83.58	104.51
79	231485	302	130.46	197.31	229242	190	82.88	108.11
80	235881	323	136.93	199.38	232902	221	94.89	124.86
81	242181	301	124.29	193.06	239136	191	79.87	101.76
82	242211	334	137.90	210.05	244007	194	79.51	106.98
83	251237	348	138.51	220.67	249751	229	91.69	122.07
84	253097	367	145.00	240.89	251332	192	76.39	103.22
85	256616	324	126.26	217.06	254526	214	84.08	113.06
86	260149	374	143.76	250.52	257671	205	79.56	100.92
87	265498	331	124.67	202.98	261498	231	88.34	114.62
88	262726	404	153.80	250.76	264539	287	108.49	153.86
89	272643	401	147.10	237.16	285840	258	90.26	131.13
90	289391	443	153.10	248.1	285437	322	112.81	151.55
91	294993	446	151.20	260.53	287546	305	106.07	139.36
92	299306	430	143.70	240.72	291905	302	103.46	139.6
93	299498	408	136.20	216.73	296060	283	95.59	126.12
94	303761	379	124.80	197.96	295104	260	88.10	114.01
95	302782	359	118.60	192.95	294867	289	98.01	125.92
96	302538	381	125.90	203.65	298596	297	99.47	133.41
Total of 70's	1595044	2529	158.55	-	1576024	1589	100.82	-
Total of 80's	2595749	3627	139.73	-	2593737	2323	89.56	-
Total of 90's	1802878	2403	133.29	-	1764078	1736	98.41	-
Total	5993671	8559	142.80	-	5933839	5648	95.18	-

Table 2 The geographic distribution of esophageal cancer in Cixian from 1974 to 1996 (1/100000)

Year	Mountainous area			Hilly area			Level land area
	Population	Cases	Incidence rate	Population	Cases	Incidence rate	Population	Cases	Incidence rate
74	77240	165	213.60	145428	241	165.71	216973	323	148.81
75	77581	151	194.63	147830	232	156.93	219589	288	131.15
76	77981	132	169.27	148692	221	148.62	221951	290	130.65
77	78231	116	148.27	149995	192	128.00	223866	220	98.27
78	78257	85	108.60	151456	220	145.25	226488	226	99.78
79	78112	80	102.41	152682	173	113.11	229933	239	103.94
80	78331	92	117.45	155341	210	135.18	235111	242	102.93
81	78555	79	100.56	160010	157	98.12	242752	256	105.45
82	79271	92	116.05	162756	161	98.92	244191	275	112.62
83	80023	100	124.96	166662	186	111.60	254303	290	114.04
84	80294	95	118.32	168296	144	85.56	259276	320	123.42
85	80877	80	98.92	170916	173	101.22	262624	285	108.52
86	82214	101	122.85	172888	179	103.54	266119	296	111.23
87	82291	78	94.79	175132	173	98.78	269573	310	115.00
88	81953	114	139.10	177724	215	120.97	263222	340	129.17
89	82289	91	110.58	179502	206	114.76	275391	355	128.91
90	84228	62	73.61	190411	239	125.52	298185	449	150.58
91	85459	48	56.17	192370	262	136.20	302601	425	140.45
92	85498	59	69.01	194281	250	126.68	307073	405	131.90
93	86484	68	78.63	195963	225	114.88	308956	386	124.94
94	87881	68	77.38	198956	188	94.49	312984	374	119.50
95	87661	78	88.98	198715	195	98.13	311510	413	132.58
96	87221	72	82.55	198276	191	96.33	311009	409	131.51
Total of 70's	545733	821	150.44	1051424	1489	141.62	1573911	1828	116.14
Total of 80's	811995	892	109.85	1724297	1833	106.30	2635636	3176	120.50
Total of 90's	520204	393	75.55	1178561	1311	111.24	1854133	2412	130.09
Total	1877932	2106	112.14	3954282	4633	117.16	6063680	7416	122.30