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Table 2 Change in HBM constructs in the test and control groups from baseline to 3-month follow-up after the intervention

From: An educational intervention using the health belief model for improvement of oral health behavior in grade-schoolers: a randomized controlled trial

Measures

Test

Control

Difference (95% CI for difference FL—BL)

Difference (95% CI for difference test—control)

ANCOVA test

BL (n = 56)

FL (n = 55)

BL (n = 56)

FL (n = 54)

Mean (SD)

Mean (SD)

Mean (SD)

Mean (SD)

Test

Control

BL

FL

F (p value)

Perceived susceptibility

6.0 (3.4)

10.2 (1.5)

5.3 (3.1)

5.0 (2.9)

4.2 (3.4–5.1)**

− 0.3 ([− 0.5]–[− 0.1])*

0.7 (− 0.5–1.9)

5.2 (4.3–6.1)**

262.3 (< 0.001)

Perceived severity

24.8 (3.5)

26.1 (2.9)

23.6 (3.8)

24.0 (3.7)

1.3 (0.7–1.9)**

0.4 (0.1–0.7)*

1.2 (− 0.1–2.6)

2.1 (0.9–3.3)*

13.7 (< 0.001)

Perceived benefits

11.0 (1.4)

11.5 (1.3)

10.5 (1.7)

10.4 (1.6)

0.5 (0.2–0.7)*

− 0.1 (− 3.0–[− 0.0])*

0.5 (− 0.1–1.1)

1.1 (0.5–1.7)**

24.4 (< 0.001)

Perceived barriers

15.4 (6.6)

8.5 (5.2)

16.2 (5.8)

16.1 (5.9)

− 6.9 (− 8.2–[− 5.5])**

− 0.1 (− 3.0–[− 0.1])

− 0.8 (− 3.1–1.5)

− 7.6 (− 9.6–[− 5.5])**

137.1 (< 0.001)

Self-efficacy

6.9 (3.4)

10.2 (1.6)

7.7 (3.2)

8.3 (2.8)

3.3 (2.4–4.1)**

0.5 (0.2–0.9)*

− 0.8 (− 2.0–0.4)

1.9 (1.1–2.8)**

53.0 (< 0.001)

Cues to action

7.7 (4.8)

10.2 (2.6)

7.3 (4.1)

7.4 (4.0)

2.5 (1.6–3.6)**

0.1 (-0.0–0.2)

0.4 (− 1.3–2.1)

2.8 (1.6–4.1)**

60.9 (< 0.001)

Action (behavior)

6.4 (2.7)

11.4 (1.2)

6.1 (2.7)

6.7 (2.6)

5.0 (4.2–5.8)**

0.6 (0.4–0.8)**

0.3 (− 0.7–1.3)

4.7 (3.9–5.5)**

226.4 (< 0.001)

  1. M mean, SD standard deviation, CI confidence interval, BL baseline, FL 3 months follow up, ANCOVA analysis of covariance, where the group included as independent variable, baseline measures as covariates and follow-up measures as the dependent variables; **p < 0.001; *p < 0.01