Table 2.
Effect of Surveillance Method on Self-Report Measures
| Observed means ± standard deviations | |||||
|---|---|---|---|---|---|
| Outcome | Time 1 | Time 2 | Time 3 | Estimated mean difference between groups at Time 2 (95% CI) | Estimated mean difference between groups at Time 3 (95% CI) |
| STAI-Trait | |||||
| MG alone | 51.50 ± 2.6 | 51.55 ± 2.8 | 51.79 ± 2.5 | -0.37 (-1.23 to 0.49) | -0.80 (-1.71 to 0.10) |
| MG + A- MRI | 51.61 ± 2.5 | 51.20 ± 2.2 | 50.94 ± 2.5 | ||
| STAI-State | |||||
| MG alone | 51.85 ± 2.8 | 45.14 ± 5.7 | 50.99 ± 4.6 | -2.16 (-4.20 to 0.13)* | - 0.79 (-0.48 to 2.07) |
| MG + A-MRI | 51.07 ± 2.9 | 42.88 ± 6.3 | 51.73 ± 2.6 | ||
| PSWQ | |||||
| MG alone | 40.23 ± 13.7 | 39.52 ± 13.4 | 38.98 ± 14.2 | 0.83 (-3.4 to 5.1) | 2.43 (-1.98 to 6.84) |
| MG + A-MRI | 42.20 ± 13.4 | 41.08 ± 14.5 | 44.41 ± 14.2 | ||
| BCWS | |||||
| MG alone | 6.87 ± 2.4 | 6.93 ± 2.4 | 6.44 ± 2.1 | -0.40 (-1.11 to 0.30) | -0.27 (-0.99 to 0.45) |
| MG + A-MRI | 6.73 ± 2.3 | 6.55 ± 2.3 | 6.39 ± 2.1 | ||
| HSQ-12 | |||||
| MG alone | 617.52 ± 143.7 | 603.57 ± 122.5 | 590.54 ± 156.3 | -6.12 (-48.48 to 36.34) | 25.41 (-23.32 to 74.13) |
| MG + A-MRI | 597.94 ± 145.3 | 596.73 ± 141.5 | 611.44 ± 123.5 | ||
Note: Analysis is based on the intent-to-treat sample. Questionnaires were completed upon enrolment during consultation (T1; n = 92 MG alone and n = 103 MG + A-MRI), upon receipt of the MG and/or MRI results (T2; n = 61 MG alone and n = 84 MG + A-MRI), and 6- months later (T3; n = 49 MG alone n = 73 MG + A-MRI)
For all questionnaires, higher scores represent higher anxiety or worry
STAI State Trait Anxiety Trait (i.e., how the personal generally feels) and State (i.e., how the person feels at this moment), PSWQ Penn State Worry Questionnaire, BCWQ Breast Cancer Worry Scale, HSQ Health Status Questionnaire
Range of scores: For the trait-STAI scores range from 20–80 and the state-STAI scores range from 20–80, with cut-off scores of ≥ 31.8 and ≥ 32.2 indicating elevated levels of trait and state anxiety, respectively. The PSWQ scores range from 16–80 (higher scores indicating higher worry), and the BCWS summed scores range from 3 (low worry) to 12 (high worry). The scores for the HSQ-12 range from 0 to 800, with higher scores indicating better perceived health status
*p < .05 MG alone vs MG + A- MRI