Table 2.

Risk factors with acute ischemic stroke at different altitudes.

Variable (n, %)	Tianjin	Xining	P
Somking	68 (51.2%)	25 (52.1%)	0.910
Alcohol consumption	47 (35.3%)	30 (62.5%)	0.001*
Hypertension	107 (80.5%)	34 (70.8%)	0.169
Diabetes mellitus	71 (53.4%)	15 (31.3%)	0.008*
Dyslipidemia	68 (51.1%)	39 (81.3%)	<0.001*
Hypertriglyceridemia	8 (6.0%)	20 (41.7%)	<0.001*
Hypercholesterolemia	5 (3.8%)	2 (4.2%)	0.173
Coronary artery disease (CHD)	66 (49.6%)	14 (29.2%)	0.014*
Erythrocytosis	0	7 (14.6%)	0.005*
Hyperhomocysteinemia	29 (21.8%)	24 (50.0%)	<0.001*
Abnormal CCA-IMT	30 (22.6%)	19 (39.6%)	0.023*
Plaque	44 (33.1%)	25 (52.1%)	0.020*

^*Categorical variables are expressed as frequency (percentage).

^*P < 0.05 was considered statistically significant.