Decrease in liver cancer incidence rates in Bamako, Mali over 28 years of population-based cancer registration (1987-2015)

Table 2 Comparison of the incidence (age-standardized rate) of the four most common cancers among males and females over three periods in Bamako, Mali from the cancer registry of Bamako)

Site	1987-1996			1997-2006			2007-2015			1997-2006 vs 1987-1996	2007-2015 vs 1987-1996
	Cases	ASR	%	Cases	ASR	%	Cases	ASR	%	IRR (95%CI)	IRR (95%CI)
	Males
Stomach	287	16.86	14.78	416	19.24	19.47	583	11.36	12.89	1.14 (0.93-1.36)	0.67 (0.53-0.82)
Liver	426	19.41	21.93	378	13.12	17.69	405	8.15	8.95	0.67 (0.59-0.76)	0.42 (0.34-0.50)
Prostate	71	4.81	3.66	189	9.54	8.84	479	14.41	10.59	1.98 (1.30-2.67)	2.99 (1.99-4.00)
Bladder	159	8.49	8.19	158	6.13	7.39	357	8.10	7.89	0.72 (0.54-0.89)	0.95 (0.78-1.13)
	Females
Cervix uteri	515	21.60	27.16	660	20.43	25.94	1732	35.54	26.61	0.95 (0.86-1.02)	1.64 (1.37-1.92)
Breast	236	10.16	12.45	421	13.03	16.55	1408	26.14	21.63	1.28 (1.01-1.56)	2.57 (2.10-3.05)
Stomach	206	10.23	10.86	286	11.34	11.24	447	6.17	6.87	1.15 (0.84-1.46)	0.62 (-0.23-1.48)
Liver	151	7.02	7.96	144	5.15	5.66	129	2.57	1.98	0.73 (0.56-0.91)	0.37 (0.28-0.45)

ASR: Age-standardized rate; CI: Confidence interval; IRR: Incidence rate ratio.