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Table 2 Mean differences over time in intervention mechanisms for each intervention

From: Evaluating mechanisms of change in an oral hygiene improvement trial with older adults

Mechanism

 

AMI counseling intervention

 

Oral health campaign

Characteristics (N = 163)

 

Mean (SD)

Difference in mean (SD)

Paired t-test p value

 

Mean (SD)

Diff. in mean (SD)

Paired t-test p value

OH Self- efficacy

Time 0

3.42 (0.55)

− 0.18 (0.59)

< 0.0001

Time 0

3.40 (0.60)

0.01 (0.71)

0.779

Time 1

3.60 (0.49)

  

Time 1

3.39 (0.59)

  

OH Perceived risk

Time 0

2.95 (0.72)

− 0.11 (0.70)

0.046

Time 0

2.97 (0.76)

− 0.08 (0.86)

0.238

Time 1

3.06 (0.69)

  

Time 1

3.05 (0.80)

  

OH Fears

Time 0

2.14 (1.03)

− 0.40 (1.0)

< 0.0001

Time 0

2.34 (1.05)

− 0.22 (1.01)

0.008

Time 1

2.54 (1.08)

  

Time 1

2.57 (1.12)

  

OH Intent

Time 0

1.72 (0.34)

− 0.12 (0.30)

< 0.0001

Time 0

1.62 (0.41)

− 0.08 (0.33)

0.004

Time 1

1.84 (0.28)

  

Time 1

1.71 (0.37)

  

OH Locus of control

Time 0

2.78 (0.67)

− 0.15 (0.81)

0.014

Time 0

2.82 (0.69)

0.03 (0.74)

0.621

Time 1

2.94 (0.67)

  

Time 1

2.78 (0.71)

  

OH Norms

Time 0

3.66 (0.42)

− 0.16 (0.53)

< 0.0001

Time 0

3.73 (0.37)

− 0.11 (0.42)

0.002

Time 1

3.82 (0.35)

  

Time 1

3.84 (0.28)

  

OH worries

Time 0

2.81 (0.86)

− 0.27 (0.70)

< 0.0001

Time 0

2.94 (0.83)

− 0.16 (0.72)

0.007

Time 1

3.08 (0.78)

  

Time 1

3.11 (0.84)

  

Sugar

Time 0

0.70 (0.49)

0.07 (0.47)

0.052

Time 0

0.71 (0.48)

0.15 (0.49)

< 0.0001

Time 1

0.63 (0.45)

  

Time 1

0.56 (0.42)

  

Brushing

Time 0

4.02 (.831)

− 0.172

0.001

Time 0

3.88 (.938)

0.021

.683

Time 1

4.20 (.727)

  

Time 1

3.86 (.861)

  

Flossing

Time 0

2.28 (1.880)

− .718

0.001

Time 0

1.93 (1.75)

− .273

0.029

Time 1

2.91 (1.534)

  

Time 1

2.20 (1.730)

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