Table 4: Differences between dentists and dental hygienists based on key variablesa.

Variable Pearson Chi Square df Significance Phi Cramer’s V
Knowledge
Received AO4 training 7.304b 1 0.007 -0.295
Acceptable standards for patients recommended for AO4 24.697b 4 0.000 0.658
Level of understanding of AO4 18.062 4 0.001 0.573
Perceptions
Felt prepared to offer AO4 to patients 1.574b 1 0.210 0.194
Comfortable with maintenance therapy of patients with AO4 10.140b 3 0.017 0.47
Felt needed further training in AO4 1.792b 1 0.181 -0.189
Self-reported practices
Participated in AO4 process 4.057b 1 0.044c 0.228
Digital records 0.040b 1 0.842 0.024
Are pregnancy and lactation risk factors for AO4? 0.891b 1 0.345 0.146
Have an AO4 risk assessment form/protocol 1.607b 1 0.205 0.189
Number of patients provided maintenance therapy who had full-arch implant supported fixed prosthesis 4.353b 4 0.338 0.307
Confidence
Confidence level with regard to AO4 process 20.965b 4 0.000 0.529

aLevel of significance 0.05; b1 cells (25.0%) have expected count less than 5. The minimum expected count is 3.81; cDue to lack of response (one participant responded to this question) this figure is calculated based on the continuity correction; Computed only for a 2 × 2 table with a measurement of 0.098, and therefore is statistically insignificant.