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. 2019 Mar 13;19:45. doi: 10.1186/s12903-019-0734-4

Table 1.

The general characteristics of the study group

N (%) OS≥2 (%) P VSC ≥ 110 (%) P
Gender 0.018 0.394
 Male 101 (49.3) 75 (55.6) 38 (45.2)
 Female 104 (50.7) 60 (44.4) 46 (54.8)
 Total 205 135 (65.9) 84 (41.0)
Age 0.105 0.448
 18–29 98 (47.8) 60 (61.2) 42 (42.9)
 30–40 69 (33.7) 44 (63.8) 23 (33.3)
 41–50 24 (11.7) 18 (75.0) 11 (45.8)
 51–60 11 (5.4) 11 (100.0) 6 (54.5)
 > 60 3 (1.5) 2 (66.7) 2 (66.7)
 Total 205 135 (65.9) 84 (41.0)
Educational attainment 0.774 0.196
 Junior high school 21 (10.2) 16 (76.2) 13 (61.9)
 High school or technical college 82 (40.0) 53 (64.6) 30 (36.6)
 College student 85 (41.5) 55 (64.7) 35 (41.2)
 Master’s degree or above 17 (8.3) 11 (64.7) 6 (35.3)
 Total 205 135 (65.9) 84 (41.0)