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. 2020 Nov 12;10(11):e037748. doi: 10.1136/bmjopen-2020-037748

Table 2.

Descriptive statistics of the pretest and post-test variables with frequencies (% frequencies between brackets) or means (SD between brackets), and results of the analyses

Phase 1 Phase 2
Promotion fit Prevention fit Control group Promotion fit Promotion non-fit Prevention fit Prevention non-fit Control group
Pretest variables
 General health status 3.88 (0.77) 3.77 (0.87) 3.7 (0.87) 3.79 (0.79) 3.63 (0.67) 3.66 (0.76) 3.70 (0.77) 3.76 (0.69)
 Physical activity 2.45 (1.85) 2.47 (1.69) 2.43 (1.92) 0.78 (0.42) 0.81 (0.39) 0.76 (0.46) 0.72 (0.45) 0.86 (0.35)
 Smoking habits 1.86 (4.85) 1.99 (4.99) 3.32 (6.42) 3.53 (5.4) 3.12 (4.66) 4.93 (5.59) 3.19 (5.15) 7.22 (5.4)
 Alcohol consumption 1.92 (2.79) 1.71 (2.27) 1.42 (2.14) 3 (2.26) 2.66 (2.15) 3.27 (4.13) 2.67 (3.54) 3.1 (4)
 Fear of breast Cancer 3.4 (.85) 3.4 (.81) 3.4 (1) 3.75 (.95) 3.59 (.91) 3.79 (.95) 3.83 (.93) 3.68 (1)
 Ego-involvement 5.9 (1.1) 5.8 (1.27) 5.9 (1.3)
 Benefit for mammography 3.9 (0.62) 3.8 (0.62) 4 (0.74) 4.1 (0.75) 4.12 (0.73) 4.16 (0.68) 4.16 (0.65) 3.94 (0.78)
 Intention to ask for BC screening 3.35 (1.33) 3.35 (1.29) 3.44 (1.22) 3.31 (1.40) 3.45 (1.41)
Diet
 No 46 (38%) 49 (37%) 39 (36%) 24 (41%) 30 (53%) 29 (39%) 27 (37%) 13 (45%)
 Yes 76 (62%) 81 (62%) 69 (64%) 34 (59%) 27 (47%) 45 (61%) 47 (63%) 16 (55%)
BC among relatives
 No 117 (96%) 117 (90%) 89 (82%) 52 (90%) 48 (84%) 65 (88%) 67 (90%) 28 (97%)
 Yes (mother) 4 (3%) 8 (6%) 17 (16%) 5 (9%) 6 (11%) 7 (10%) 7 (10%) 1 (3%)
 Do not know 1 (1%) 5 (4%) 2 (2%) 1 (1%) 3 (5%) 2 (2%)
Mammography
 No 100 (82%) 100 (77%) 72 (67%) 40 (69%) 38 (67%) 50 (68%) 50 (68%) 23 (79%)
 Yes 22 (18%) 30 (23%) 36 (33%) 18 (31%) 19 (33%) 24 (32%) 24 (32%) 6 (21%)
Biopsy
 No 17 (77%) 27 (90%) 26 (72%) 57 (98%) 55 (97%) 67 (91%) 71 (96%) 29 (100%)
 Yes 5 (23%) 3 (10%) 10 (28%) 1 (2%) 2 (3%) 7 (9%) 3 (4%)
Knowledge of BC screening programme
 No 76 (62%) 69 (53%) 64 (59%) 21 (36%) 23 (40%) 26 (35%) 27 (37%) 7 (24%)
 Yes 46 (38%) 61 (47%) 44 (41%) 37 (64%) 34 (60%) 48 (65%) 47 (63%) 22 (76%)
Knowledge of the age thresholds for BC screening programme
 Do not know 16 (35%) 24 (39%) 13 (30%) 21 (36%) 32 (56%) 26 (35%) 27 (37%) 7 (24%)
 Wrong 22 (48%) 28 (46%) 30 (68%) 29 (50%) 18 (32%) 34 (46%) 37 (50%) 18 (62%)
 Correct 8 (17%) 9 (15%) 1 (2%) 8 (14%) 7 (12%) 14 (19%) 10 (13%) 14 (14%)
Post-test variables
Intention to ask for BC screening 2.20 (1.05) 2.26 (1.06) 3.36 (1.33) 3.02 (1.61) 2.89 (1.48) 3.17 (1.48) 3 (1.54) 2.78 (1.49)
Results from ANCOVA* or repeated measures ANCOVA† F* (2, 319)=49.57, p<0.0001, η2p=0.24 Within subject comparison between preintention and postintention: F† (1, 267.91)=5.10, p=0.025, partial η2=0.02
Between subject comparisons among groups: F† (4, 284)=0.43, p>0.05
Promotion fit versus control condition t(319)=−8.80, p<0.0001, r=0.44
Prevention fit versus control condition t(319)=−8.80, p<0.0001, r=0.44
Significant covariates
Fear of BC: F(1, 319)=6.81, p=0.010, partial η2p=0.02 Fear of BC: t(284) = 2.76, p=0.006, B=0.24, partial η2=0.03 (95% low CI=0.07, 95% high CI=0.42)
Age: F(1, 319)=26.20, p<0.0001, partial η2p=0.08 Age, t(284) = 6.26, p<0.0001, B=0.11, partial η2=0.12 (95% low CI=0.08, 95% high CI=0.15)
Risk perception, t(284) = 2.26, p=0.024, B=0.37, partial η2=0.02 (95% low CI=0.05, 95% high CI=0.70).

*Ancova

†Repeated Measures Ancova

ANCOVA, analysis of covariance; BC, breast cancer.