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

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