Incidence of gastroesophageal reflux disease in Uygur and Han Chinese adults in Urumqi

Table 1 Gastroesophageal reflux disease questionnaire scale

Symptom	Symptoms in the past 7 d	0 d	1 d	2-3 d	4-7 d
Positive symptom	Heart burn	0	1	2	3
	Regurgitation	0	1	2	3
Negative symptom	Upper abdominal pain	3	2	1	0
	Nausea	3	2	1	0
Positive affect	Sleeping disorder	0	1	2	3
	Extra medication	0	1	2	3

Table 2 Baseline characteristics of the participants

Ethnic group	n	Occupation(college students, workers/civil servants)	Gender(male/female)	Age(yr)	Smoking(yes/no)	Alcohol drinking(yes/no)	Diet custom(mainly meat/mainly vegetable)
Uygur	972	497/475	684/288	43 ± 8.5	643/329	665/307	952/20
Han	1023	572/451	752/271	44 ± 9.1	728/295	725/298	297/726
P value		NS	NS	NS	NS	NS	0.000

NS: Not significant.

Table 3 Gastroesophageal reflux disease incidence in Uygur and Han

Ethnic group	GERD	GERD			Gender		χ2	P value
		EE	NERD	BE	Male	Female
Uygur	304 (31.3)a	89	185a	30	254 (26)ce	50 (5)	35.95	< 0.005
Han	256 (25)	90	140	26	203 (19.8)c	53 (5.2)	5.48	< 0.025
χ2	9.34	10.06			16.51	0.31
P value	< 0.005	< 0.005			< 0.005	NS

^aP < 0.05 vs Han;

^cP < 0.05 vs female;

^eP < 0.05 vs Han male. EE: Erosive esophagitis; BE: Barrett’s esophagus; NERD: Non-erosive reflux disease; NS: Not significant.

Table 4 Risk factors related to gastroesophageal reflux disease in Uygur and Han Chinese by regression analysis

Uygur						Han Chinese
Risk factor	B	Std. E	Beta	t	P value	Risk factor	B	Std. E	Beta	t	P value
Occupation	0.623	0.169	0.115	3.079	0.005	Occupation	0.957	0.218	0.208	4.393	0.000
Gender	0.839	0.271	0.136	3.132	0.002	Gender	-0.016	0.005	-0.06	-3.059	0.002
Smoking	0.322	0.123	0.064	2.614	0.009	Smoking	0.482	0.088	0.113	5.449	0.000
Strong tea	-0.658	0.140	-0.134	-4.797	0.000	Strong tea	-1.124	0.142	-0.233	-7.935	0.000
Drinking	-0.696	0.145	-0.138	-4.805	0.000	Drinking	-0.558	0.112	-0.128	-4.971	0.000
Mainly meat	-0.676	0.168	-0.132	-4.011	0.000	Mainly meat	-0.591	0.165	-0.092	-3.579	0.000
BMI	0.567	0.029	0.638	19.653	0.000	BMI	0.246	0.034	0.265	7.183	0.000

BMI: Body mass index.