Table 3.
Comparative (decision aid versus usual care) continuous outcomes
| Study | Scale | Mean (SD) intervention* |
Mean (SD) control* |
Mean difference (95% CI) | p-value |
|---|---|---|---|---|---|
| Clinicians’ satisfaction with decision aid and decision making process | |||||
| Montori 2011,27 Osteoporosis | Scale 1–7 | 4.5 (range 3–5) | 4 (range 2–5) | 0.52 (0.27 to 0.78) | <0.01 |
| Légaré 2012,30 Antibiotics for respiratory infections (2) | Scale 0–10 | 8.2 (1.3) | 8.4 (1.0) | −0.2 (−0.6 to 0.2) | |
| Légaré 2011,31 Antibiotics for respiratory infections (1) | Scale 1–10 | 8.7 (1.2) | 8.5 (1.3) | 0.2 (−0.34 to 0.89) | 0.29 |
| Leighl 2011,34 Palliative chemotherapy in colorectal cancer | Scale 6–30 | median 24 (range 18 to 30) | median 24 (range 21 to 30) | 0 | |
| Ozanne 2007,35 Breast cancer prevention | Scale 1–5 | 1.82 (0.52) | 1.78 (0.45) | 0.82 | |
| Whelan 2003,36 Adjuvant chemotherapy in breast cancer | Scale 1–5 | 4.37 (95% CI 4.16 to 4.58) | 4.35 (95% CI 4.19 to 4.51) | 0.02 | 0.89 |
| Decisional conflict | |||||
| Warner 2015,20 Smoking cessation | Decisional comfort scale (0: conflict, 100: comfort) | 81 (±12) | 74 (±16) | 7 | 0.034 |
| LeBlanc 2015,26 Osteoporosis | Decisional Conflict Scale (DCS), scores: 0–100 (0: no conflict, 100: highest conflict) | median 25 (IQR 6,25) | median 25 (IQR 14,25) | 0 | 0.18 |
| LeBlanc 2015,28 Depression | Decisional Conflict Scale (DCS), scores: 0–100 (0: conflict, 100: comfort) | 79.7 (95% CI 77.6 to 81.8) | 68.3 (95% CI 65.4 to 71.2) | 11.4 (5.7 to 17.1) | <0.001 |
| Helpfulness of the shared information | |||||
| Montori 2011,27 Osteoporosis | Scale 1–7 | 5.8 (range 3 to 7) | 5.2 (range: 2 to 7) | 0.64 (0.18 to 1.09) | 0.006 |
| Intention to use decision aid/SDM making in the future/for other decisions | |||||
| Montori 2011,27 Osteoporosis | Scale 1–7 | 6.1 (range 4 to 7) | 4.9 (range 1 to7) | 1.2 (0.73 to 1.67) | <0.001 |
| Légaré 2012,30 Antibiotics for respiratory infections (2) | 3-item scale (scores: −3 to 3) |
1.7 (0.9) | 1.8 (0.7) | 0.0 (−0.3 to 0.2) | |
| Légaré 201131 Antibiotics for respiratory infections(1) | 3-item scale (scores: −3 to 3) |
1.3 (1.2) | 0.8 (1.3) | 0.5 (−0.2 to 1.3) | 0.77 |
| Would recommend decision aid/SDM to other clinicians | |||||
| Montori 2011,27 Osteoporosis | Scale 1–7 | 5.9 (range 3 to 7) | 4.8 (range 1 to 7) | 1.09 (0.57 to 1.61) | <0.001 |
| Intention to follow clinical practice guidelines | |||||
| Légaré 2012,30 Antibiotics for respiratory infections (2) | 3-item scale (scores: −3 to 3) |
2.0 (0.7) | 2.2 (0.7) | −0.2 (−0.5 to 0.1) | |
| Légaré 2011,31 Antibiotics for respiratory infections (1) | 3-item scale (scores: −3 to 3) |
2.1 (0.9) | 2.2 (0.5) | −0.1 (−0.7 to 0.5) | |
| Length of the consultation in outpatient setting | |||||
| Coylewright 2016,13 Stable coronary artery disease | minutes | “The mean duration of the clinical visits was 24 minutes, ranging from 5 to 60 minutes.” | “Both decision aid and UC visits took a similar amount of time…” | ||
| Perestelo-Pérez 2016,17 Statin | minutes | 18.10 (8.07) | 19.65 (12.61) | −4.36 (−12.9 to 4.18) Beta/Odds Ratio from multilevel linear/logistic regression | |
| Nannenga 2009,18 Statin | minutes | only mean difference available | 3.8 (−2.9 to 10.5) | ||
| Thomson 2007,19 Anticoagulation atrial fibrillation | minutes | median 31 (IQR 16 to 41) | median 21 (IQR 19 to 26) | 10 | 0.001 |
| Mathers 2012,21 Insulin | minutes | 15.31 (2–39) | 16.95 (5 to 45) | −1.67 (−0.93 to −4.27) | |
| LeBlanc 2015,26 Osteoporosis | minutes | Median 11.5 (range 5.4 to 21.4) | Median 10.7 (range 2.5 to 54.9) | 0.8 (−33.6 to 3.0) | |
| Montori 2011,27 Osteoporosis | minutes | median 12.4 (range 2.3 to 27.4) | median 9.4 (range 2.1 to 58) | 3.0 | 0.045 |
| LeBlanc 2015,28 Depression | minutes | 44 (22) | 48 (27) | −4 | 0.47 |
| Walczak 2017,33 Cancer advance care planning | minutes | 20.6 | 20.4 | 0.2 | 0.307 |
| Ozanne 2007,35 Breast cancer prevention | minutes | 24.3 (7.5) | 21.9 (8.51) | 2.4 | 0.42 |
| Whelan 2003,36 Adjuvant chemotherapy in breast cancer | minutes | 47.5 | 39.9 | 0.26 | |
| Bekker 2004,37 Prenatal Diagnosis | minutes | 32.2 (95% CI 28.6 to 35.8) | 26.3 (95% CI 23.2 to 29.2) | 5.9 | 0.01 |
| Loh 2007,29 Depression | minutes | 31.4 (15.1) | 29.2 (10.7) | 2.2 | 0.476 |
| Length of conversation in emergency department | |||||
| Hess 2016,15 Chest pain | minutes | 4.4 (0.40) | 3.1 (0.29) | 1.3 | 0.008 |
*
unless specified otherwise
95% CI=9% confidence interval
IQR= interquartile range; SDM= shared decision making