Table 4.
Mean (95% confidence interval) scores on hospital anxiety and depression scale and sleep problem questionnaire at baseline and follow up at three, six, and 12 months
| Control group | Minimum intervention | Telephone intervention | Maximum intervention | P value* | |
|---|---|---|---|---|---|
| Depression† | |||||
| Baseline | 10.4 (8.9 to 11.8) | 9.3 (8.0 to 10.5) | 9.0 (7.8 to 10.2) | 9.0 (7.8 to 10.2) | |
| 3 months | 11.2 (9.6 to 12.9) | 6.1 (4.7 to 7.4) | 5.9 (4.5 to 7.3) | 5.8 (4.8 to 6.9) | |
| 6 months | 11.0 (9.2 to 12.9) | 5.4 (3.9 to 6.9) | 5.6 (4.3 to 6.9) | 5.0 (3.8 to 6.2) | |
| 1 year | 10.1 (8.4 to 11.7) | 4.2 (3.0 to 5.5) | 4.6 (3.2 to 6.0) | 4.2 (2.9 to 5.5) | <0.001 |
| Anxiety† | |||||
| Baseline | 11.2 (9.6 to 12.8) | 10.6 (9.1 to 12.1) | 10.0 (8.4 to 11.7) | 10.2 (8.8 to 11.7) | |
| 3 months | 11.4 (9.8 to 13.1) | 9.2 (7.3 to 10.7) | 7.7 (6.1 to 9.2) | 8.7 (7.2 to 10.1) | |
| 6 months | 10.6 (8.8 to 12.4) | 8.7 (7.1 to 10.2) | 7.5 (6.0 to 9.0) | 7.7 (6.2 to 9.2) | |
| 1 year | 10.1 (8.4 to 11.7) | 7.1 (5.8 to 8.5) | 6.5 (5.1 to 7.9) | 7.7 (6.1 to 9.3) | <0.01 |
| Sleep problem questionnaire‡ | |||||
| Baseline | 12.8 (11.1 to 14.5) | 12.4 (10.8 to 14.0) | 13.5 (12.1 to 15.0) | 13.0 (11.4 to 14.7) | |
| 3 months | 11.6 (9.8 to 13.5) | 9.0 (7.4 to 10.5) | 10.1 (8.2 to 11.9) | 8.7 (7.2 to 10.3) | |
| 6 months | 12.1 (10.1 to 14.1) | 7.4 (5.7 to 9.1) | 9.1 (7.2 to 11.0) | 8.2 (6.6 to 9.9) | |
| 1 year | 11.5 (9.7 to 13.4) | 6.7 (5.0 to 8.4) | 8.6 (6.8 to 10.3) | 7.1 (5.6 to 8.7) | <0.001 |
*
P values derived from one way analysis of covariance on scores at one year with initial scores and depression scores as covariates.
†
Hospital anxiety and depression scale: score range 0-21, where more than 10 indicates clinical depression or anxiety.
‡
Score range 0-20, where 20 indicates maximum sleep problems.