Table 2.
Estimated marginal means at pre-, mid- post-treatment and 3 months following internet CBT for health anxiety.
| Pre-treatment |
Mid-treatment |
Post-treatment |
3-month follow-up |
Pre- to post-treatment |
Pre-treatment to follow-up |
|||||
|---|---|---|---|---|---|---|---|---|---|---|
| Mean (SD) n = 16 |
Mean (SD) n = 13 |
Mean (SD) n = 13 |
Mean (SD) n = 11 |
F(df) | r | Effect size: Hedges g (95% CI) | F(df) | R | Effect size: Hedges g (95% CI) |
|
| Symptoms | ||||||||||
| Health Anxiety (SHAI) | 32.94 (7.24) | 23.67 (7.10) | 18.70 (6.89) | 18.01 (6.77) | F (2, 26.35) = 25.44⁎⁎ | 0.31 | 1.64 (0.80–2.49) | F (3, 37.61) = 24.41⁎⁎ | 0.42 | 1.60 (0.73–2.48) |
| Distress (K − 10) | 26.19 (6.00) | 16.86 (5.99) | 15.83 (5.99) | 16.01 (5.27) | F (2, 76.46) = 18.27⁎⁎ | 0.004 | 1.67 (0.82–2.52) | F (3, 37.15) = 17.06⁎⁎ | 0.40 | 1.36 (0.51–2.21) |
| Depression (PHQ-9) | 8.31 (3.36) | 3.71 (3.35) | 3.36 (3.24) | 2.30 (2.98) | F (2, 25.69) = 14.38⁎⁎ | 0.35 | 1.20 (0.40–1.99) | F (3, 37.02) = 13.75⁎⁎ | 0.27 | 1.35 (0.50–2.20) |
| Somatic Symptoms (PHQ-15) | 13.56 (4.76) | 8.71 (4.40) | 7.88 (4.36) | 7.53 (4.11) | F (2, 24.27) = 39.31⁎⁎ | 0.73 | 1.27 (0.48–2.08) | F (3, 35.04) = 27.18⁎⁎ | 0.66 | 1.30 (0.45–2.14) |
| Generalised Anxiety (GAD-7) | 10.81 (4.04) | – | 4.78 (3.97) | 4.62 (3.78) | F (1, 12.25) = 25.09⁎⁎ | 0.40 | 1.52 (0.69–2.35) | F (2, 23.98) = 16.89⁎⁎ | 0.38 | 1.27 (0.47–2.07) |
| Disability (WHODAS) | 20.25 (4.76) | – | 14.72 (4.72) | 13.35 (3.91) | F (1, 9.72) = 16.25⁎ | 0.38 | 1.24 (0.45–2.04) | F (2, 18.21) = 19.30⁎⁎ | 0.58 | 1.12 (0.33–1.90) |
| Cognitive and behavioural processes: | ||||||||||
| Worry Behaviours (WBI-SF) | 12.31 (3.88) | 6.90 (3.89) | 6.63 (3.75) | 3.86 (3.52) | F (2, 24.85) = 13.27⁎⁎ | 0.47 | 1.04 (0.26–1.82) | F (3, 36.39) = 16.31⁎⁎ | 0.08 | 1.65 (0.77–2.54) |
| Body Vigilance (BVS-SF) | 21.31 (6.04) | 11.67 (6.04) | 10.90 (5.80) | 11.17 (5.97) | F (2, 27.79) = 17.76⁎⁎ | 0.22 | 1.46 (0.64–2.28) | F (3, 39.48) = 12.28⁎⁎ | 0.29 | 1.26 (0.42–2.10) |
| Cognitions (CABAH) |
45.50 (8.96) | – | 37.84 (8.29) | 31.42 (8.99) | F (1, 12.45) = 40.03⁎⁎ | 0.90 | 0.78 (0.03–1.54) | F (2, 24.40) = 23.64⁎⁎ | 0.71 | 1.03 (0.25–1.81 |
| Intolerance of Uncertainty (IUS-12) |
35.69 (9.88) | – | 25.71 (9.84) | 25.17 (10.81) | F (1, 13.60) = 9.53⁎ | 0.26 | 1.04 (0.26–1.82) | F (2, 26.25) = 5.10# | 0.09 | 0.84 (0.08–1.61) |
| Mindful Awareness and Attention (MAAS) | 50.94 (9.52) | – | 61.24 (9.12) | 63.27 (8.89) | F (1, 12.50) = 24.82⁎⁎ | 0.67 | 1.12 (0.34–1.91) | F (2, 23.92) = 18.84⁎⁎ | 0.62 | 1.05 (0.27–1.83) |
⁎⁎p < 0.001⁎p < 0.01#p < 0.05.