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Table 5 Multiple linear regression analysis of determinants of the percentage of correct answers

From: Knowledge and determinants regarding tuberculosis among medical students in Hunan, China: a cross-sectional study

  β S b b’ t P 95%CI
Epidemiology and prevention
constant 40.8 1.3   30.6 < 0.001 (38.2, 43.5)
 Observed at least one TB case
  Yes 5.6 1.7 0.1 3.4 0.001 (2.4, 8.9)
 Observed at least one X-ray of TB case
  Yes 8.2 1.8 0.2 4.5 < 0.001 (4.6, 11.8)
Diagnosis
constant 24.8 1.4   17.8 < 0.001 (22.0, 27.5)
 Age
   ≥ 23 3.9 1.1 0.1 3.6 < 0.001 (1.8, 6.1)
 Observed at least one TB case
  Yes 3.9 1.6 0.1 2.4 0.015 (0.8, 7.1)
 Observed at least one X-ray of TB case
  Yes 5.7 1.8 0.1 3.2 0.001 (2.2, 9.2)
Treatment
constant 34.2 1.8   18.7 < 0.001 (30.6, 37.8)
 Observed at least one TB case
  Yes 10.1 2.3 0.2 4.5 < 0.001 (5.68, 14.5)
 Observed at least one X-ray of TB case
  Yes 7.0 2.5 0.1 2.8 0.005 (2.2, 11.8)
 I am at risk for TB
  Yes −3.5 1.5 −0.1 −2.4 0.019 (−6.5, −0.6)
Total
constant 32.1 1.1   28.3 < 0.001 (29.9, 34.4)
 Age
   ≥ 23 2.8 0.9 0.1 3.2 0.002 (1.1, 4. 6)
 Observed at least one TB case
  Yes 5.5 1.3 0.2 4.2 < 0.001 (2.9, 8.1)
 Observed at least one X-ray of TB case
  Yes 6.7 1.5 0.2 4.6 < 0.001 (3.8, 9.5)