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. 2020 Jul 4;2020:3945189. doi: 10.1155/2020/3945189

Table 2.

Clinical parameters of study populations.

Dentists Nondentist group Statistical analysis
Age 25.52 ± 3.18 32.76 ± 12.57 p < 0.0001a
Sex p = 0.174b
 Male 30 (15.0%) 47 (23.5%) (χ2 = 1.845)
 Female 60 (20.0%) 63 (31.5%)
Residence p = 0.047b
 Urban area 83 (41.5%) 91 (45.5%) (χ2 = 3.946)
 Rural area 7 (3.5%) 19 (9.5%)
Educational background p = 0.677c
 Primary schools and below 0 (0.0) 15 (7.5%) (Z = −0.417)
 Junior middle school 0 (0.0) 13 (6.5%)
 Senior school 0 (0.0) 7 (3.5%)
 Junior college education 1 (0.5%) 15 (7.5%)
 Regular college 23 (11.5%) 32 (32.5%)
 Master 55 (27.5%) 22 (11%)
 PhD and above 11 (5.5%) 5 (2.5%)
 Unclear 0 (0.0) 1 (0.5%)
Years of working p < 0.0001c
 1-2 yrs 49 (24.5%) 49 (24.5%) (Z = −3.922)
 3-5 yrs 34 (17.0%) 31 (15.5%)
 6-10 yrs 6 (3.0%) 11 (5.5%)
 >11 yrs 1 (0.5%) 26 (13%)
 Unclear 0 (0.0) 3 (1.5%)

a Tt test; bchi-square test; cWilcoxon rank test.