Prevalence of anti-ulcer drug use in a Chinese cohort

Table 1 Age distribution of patients receiving anti-ulcer drugs and age-specific prevalence of anti-ulcer drug use from 1997 to 2001

	1997	1998	1999	2000	2001	1997-2001
Sampling cohort
0 – 19 years	57388	56427	55448	54684	51029	52103
20 – 39 years	62613	63765	64848	65219	63800	69425
40 – 59 years	39809	41420	42922	44241	45432	47663
60 years and older	20971	21836	22489	23093	23715	26780
Total	180781	183448	185707	187237	183976	195971
Patients with anti-ulcer drugs
0 – 19 years	2965	3611	5171	4634	4712	12339
20 – 39 years	5345	6741	9249	8788	9673	23741
40 – 59 years	4933	6213	8277	8113	8664	20166
60 years and older	4172	4787	5905	5643	6132	14483
Total	17415	21352	28602	27178	29181	70729
Prevalence of anti-ulcer drug use
0 – 19 years	5.2%	6.4%	9.3%	8.5%	9.2%	23.7%
20 – 39 years	8.5%	10.6%	14.3%	13.5%	15.2%	34.2%
40 – 59 years	12.4%	15.0%	19.3%	18.3%	19.1%	42.3%
60 years and older	19.9%	21.9%	26.3%	24.4%	25.9%	54.1%
Total	9.6%	11.6%	15.4%	14.5%	15.9%	36.1%