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. 2020 Nov 2;20:399. doi: 10.1186/s12909-020-02308-w

Table 2.

Individual and country-level factors of participating dental academics and their association with knowledge score

Factors N (%) Knowledge score
EM (SE)
B (95% CI) P value
Individual-level factor
Sex Male 911 (45.3) 73.01 (0.37) −0.47 (−1.45, 0.51) 0.34
Female 1099 (54.7) 73.48 (0.34) Reference
Age 25–35 706 (34.5) 72.85 (0.42) −2.85 (−5.36, − 0.34) 0.03*
> 35–45 664 (32.5) 73.49 (0.43) −2.21 (−4.72, 0.31) 0.09
> 45–55 354 (17.3) 72.87 (0.59) −2.83 (−5.47, − 0.19) 0.04*
> 55–65 236 (11.5) 73.29 (0.73) −2.41 (−5.17, 0.36) 0.09
> 65 85 (4.2) 75.70 (1.21) Reference
Living arrangements With parents 335 (16.4) 70.93 (0.61) −1.99 (−3.84, −0.13) 0.04*
With partner/ spouse 1301 (63.6) 74.17 (0.31) 1.25 (−0.30, 2.79) 0.11
Shared accommodation 76 (3.7) 72.01 (1.27) −0.91 (−3.78, 1.96) 0.53
Other 101 (4.9) 70.50 (1.19) −2.42 (−5.01, 0.17) 0.07
Alone 232 (11.3) 72.92 (0.73) Reference
Specialization Specialist 1735 (84.8) 21.33 (0.08) 0.58 (0.20) 0.003*
No-specialist 310 (15.2) 20.74 (0.18) Reference
Highest academic degree PhD 897 (43.9) 73.95 (0.37) 1.88 (0.62, 3.15) 0.004*
MSc 703 (34.4) 73.06 (0.42) 1.00 (−0.33, 2.32) 0.14
BDS 445 (21.8) 72.07 (0.53) Reference
Number of years in academia < 5 530 (25.9) 73.25 (0.48) −0.16 (−1.62, 1.30) 0.83
5–10 597 (29.2) 72.93 (0.46) −0.48 (− 1.91, 0.94) 0.51
11–20 527 (25.8) 73.43 (0.49) 0.02 (−1.44, 1.48) 0.98
21+ 391 (19.1) 73.41 (0.56) Reference
Number of courses coordinated: mean (SD) 2.3 (1.7) −0.21 (−0.48, 0.07) 0.15
Number of students per semester None 131 (6.4) 70.20 (0.97) Reference
1–49 506 (24.7) 73.96 (0.49) 1.09 (0.47, 1.71)* 0.001*
50–100 663 (32.4) 73.17 (0.43) 0.86 (0.25, 1.47)* 0.005*
101–200 370 (18.1) 73.30 (0.58) 0.90 (0.25, 1.54)* 0.006*
201+ 375 (18.3) 73.36 (0.57) 0.92 (0.27, 1.56)* 0.005*
Number of patients seen daily None 224 (11.0) 72.17 (0.74) Reference
1–10 943 (46.1) 72.51 (0.36) 0.10 (−0.37, 0.57) 0.68
11–20 525 (25.7) 74.78 (0.48) 0.76 (0.25, 1.26)* 0.003*
21–30 156 (7.6) 72.61 (0.89) 0.13 (−0.53, 0.79) 0.70
31+ 197 (9.6) 74.29 (0.79) 0.61 (−0.003, 1.23) 0.05
Training for public health emergencies No 1064 (52) 73.43 (0.34) 0.41 (−0.56, 1.38) 0.40
Yes 981 (48) 73.02 (0.36) Reference
Administrative position No 972 (47.5) 73.34 (0.36) 0.20 (−0.77, 1.17) 0.68
Yes 1073 (52.5) 73.14 (0.34) Reference
Country-level factor
Number of cases COVID-19 per million population: mean (SD) 972.9 (1123.1) 0.002 (0.002, 0.003) < 0.0001*

Abbreviations: EM Estimated means based on unadjusted multilevel linear models with country as a random effect, SE Standard error, B Regression coefficient, CI Confidence interval

*: Statistically significant at P < 0.05