Table 2

Change in decision, stress and depression measures throughout the trial (ITT sample n=107)

OutcomeREADY
(n=53)
Control
(n=54)
ANCOVA†
F(1,104)
Cohen's d
(95% CI)
P value
Mean (SD)Mean (SD)
Primary
Decisional conflict
Baseline59.1 (25.4)67.6 (21.1)0.061
Postintervention−28.9 (30.9)−15.5 (23.6)16.840.49 (0.10 to 0.87)0.000**
Follow-up−32.5 (30.8)−15.7 (23.9)23.590.61 (0.22 to 1.00)0.000**
Secondary
Decision dissatisfaction
Baseline4.3 (1.5)3.7 (2.1)0.144
Postintervention0.0 (1.3)0.4 (2.1)0.400.23 (–0.15 to 0.61)0.531
Follow-up−2.1 (2.6)0.0 (2.8)7.520.78 (0.38 to 1.17)0.008*
Stage of decision-making
Baseline1.8 (0.8)1.7 (0.7)0.642
Postintervention0.7 (1.0)0.3 (0.9)6.880.42 (0.03 to 0.80)0.010*
Follow-up1.2 (1.3)0.3 (0.9)23.590.81 (0.41 to 1.20)0.000**
Depression (PHQ-9)
Baseline16.4 (7.3)13.6 (5.7)0.034*
Postintervention−0.5 (4.3)0.6 (2.9)1.100.29 (–0.08 to 0.68)0.297
Follow-up−1.9 (5.0)0.7 (3.6)6.460.59 (0.21 to 0.98)0.013*
Stress (PSS-10)
Baseline25.3 (6.6)23.9 (5.0)0.208
Postintervention−0.4 (2.8)0.5 (1.9)2.530.38 (–0.01 to 0.76)0.115
Follow-up−1.1 (3.9)−0.1 (3.0)1.340.29 (–0.09 to 0.67)0.250
  • Postintervention: immediately after intervention use; follow-up: 6 weeks after baseline.

  • *p<0.05; **p<0.001.

  • †Controlling for baseline scores.

  • ANCOVA, analysis of covariance; ITT, intention to treat; PHQ-9, Patient Health Questionnaire-9; PSS-10, Perceived Stress Scale-10.