Table 4 Comparison of biomedical waste management knowledge scores between the categories of each variable and over time.

From: Impact of a virtual educational intervention on knowledge and awareness of biomedical waste management among Peruvian dental professionals

Variable

Category

Pre-test (X)

Post-test (Y)

14 days (Z)

**p

Post hoc

(X) vs (Y)

(X) vs (Z)

(Y) vs (Z)

Median

IQR

*p

Median

IQR

*p

Median

IQR

*p

***p

***p

***p

Age group

 ≤ 30 years

9.0

3.0

0.684

13.0

2.0

0.242

12.0

3.0

0.063

 < 0.001

 < 0.001

 < 0.001

0.143

 > 30 years

8.5

3.0

13.0

3.0

12.0

3.0

 < 0.001

 < 0.001

 < 0.001

0.042

Sex

Female

9.0

3.0

0.939

13.0

3.0

0.508

12.0

2.0

0.508

 < 0.001

 < 0.001

 < 0.001

0.071

Male

8.0

3.0

13.0

3.0

12.0

3.0

 < 0.001

 < 0.001

 < 0.001

0.087

University of origin

Public

10.0

2.0

0.099

12.0

2.0

0.992

12.0

2.0

0.520

 < 0.001

 < 0.001

 < 0.001

0.547

Private

8.0

3.0

13.0

3.0

12.0

2.0

 < 0.001

 < 0.001

 < 0.001

0.014

Marital status

Unmarried

8.0

3.0

0.461

13.0

2.0

0.644

12.0

2.0

0.535

 < 0.001

 < 0.001

 < 0.001

0.013

Married or cohabiting

9.0

3.0

13.0

3.0

12.0

2.0

 < 0.001

 < 0.001

 < 0.001

0.540

Place of origin

Capital

9.0

3.0

0.017

13.0

2.0

0.002

12.0

2.0

0.015

 < 0.001

 < 0.001

 < 0.001

0.002

Province

8.0

4.0

12.0

3.0

11.0

3.0

 < 0.001

 < 0.001

 < 0.001

1.000

Academic degree

Bachelor

9.0

3.0

0.720

13.0

2.0

0.005

12.0

2.0

0.344

 < 0.001

 < 0.001

 < 0.001

0.003

Master/Doctor

9.0

3.0

12.0

2.0

12.0

3.0

 < 0.001

 < 0.001

 < 0.001

1.000

Specialization

Yes

9.0

2.0

0.149

13.0

3.0

0.760

13.0

3.0

0.089

 < 0.001

 < 0.001

 < 0.001

1.000

No

8.0

3.0

13.0

2.0

12.0

2.0

 < 0.001

 < 0.001

 < 0.001

0.004

Work performed

Public and private care

9.0

2.0

0.154

13.0

2.0

0.060

13.0

2.0

0.346

 < 0.001

 < 0.001

 < 0.001

0.047

Private care

8.0

4.0

13.0

3.0

12.0

2.0

 < 0.001

 < 0.001

 < 0.001

0.079

Teaching and care (public and/or private)

10.0

3.0

12.0

2.0

12.0

2.0

 < 0.001

 < 0.001

 < 0.001

1.000

Professional experience

 < 10 years

8.5

3.0

0.215

13.0

2.0

0.300

12.0

2.0

0.201

 < 0.001

 < 0.001

0.002

0.024

 ≥ 10 years

9.0

4.0

13.0

3.0

12.0

3.0

 < 0.001

 < 0.001

 < 0.001

0.259

  1. *Based on the Mann Whitney U to compare two categories and on the Kruskal Wallis H to compare three categories (p < 0.05, significant differences). **Based on Friedman's test (p < 0.05, significant differences); ***Based on post hoc with Bonferroni correction (p < 0.05, significant differences).
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