Table 2.
Psychological outcomes in the positive test (+ve) and negative test (−ve) groups from 1 to 12 months
| 1 m | 3 m | 6 m | 12 m | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| +ve test, M (SD) | −ve test, M (SD) | Adj. diff. in means [95% CI] | +ve test, M (SD) | −ve test, M (SD) | Adj. diff. in means [95% CI] | +ve test, M (SD) | −ve test, M (SD) | Adj. diff. in means [95% CI] | +ve test, M (SD) | −ve test, M (SD) | Adj. diff. in means [95% CI] | P-value for diff. between groups over time | |
| PANAS positive | 31.87 (8.62) | 31.82 (8.19) | −0.82 [−1.97, 0.32] | 30.29 (9.14) | 30.91 (8.29) | −1.49 [−2.65, −0.33] |
30.90 (9.68) | 31.10 (8.40) | −0.84 [−2.00, 0.32] | 31.11 (9.92) | 30.90 (8.27) | −0.43 [−1.59, 0.73] | 0.32 |
| PANAS negative | 16.47 (7.15) | 16.36 (7.45) | 16.17 (7.25) | 15.94 (6.94) | 16.02 (6.97) | 16.55 (7.33) | 16.23 (7.61) | 16.54 (7.01) | |||||
| PANAS negative (log) | 2.72 (0.38) | 2.71 (0.38) | 0.03 [−0.03, 0.09] | 2.70 (0.39) | 2.69 (0.37) | 0.02 [−0.04, 0.07] | 2.70 (0.37) | 2.73 (0.38) | −0.01 [−0.08, 0.04] | 2.70 (0.39) | 2.73 (0.38) | −0.00 [−0.06, 0.06] | 0.22 |
| IES—total Score | 23.16 (9.50) | 19.68 (7.85) | 3.59 [2.28, 4.90] | 21.51 (8.90) | 19.57 (7.87) | 2.29 [0.97, 3.61] | 20.90 (9.02) | 19.55 (7.76) | 1.94 [0.61, 3.27] | 19.73 (7.74) | 19.64 (8.04) | 0.99 [−0.35, 2.33] | <0.001 |
| IES—intrusion | 10.51 (4.38) | 9.03 (3.64) | 1.54 [0.95, 2.14] | 9.87 (4.10) | 8.97 (3.64) | 1.07 [0.48, 1.67] | 9.54 (4.12) | 8.98 (3.65) | 0.76 [0.16, 1.36] | 8.95 (3.48) | 9.09 (3.73) | 0.10 [−0.50, 0.71] | <0.001 |
| IES—avoidance | 12.76 (5.59) | 10.82 (4.60) | 2.04 [1.27, 2.80] | 11.66 (5.18) | 10.66 (4.45) | 1.18 [0.41, 1.95] | 11.50 (5.38) | 10.67 (4.34) | 1.17 [0.40, 1.94] | 10.96 (4.72) | 10.59 (4.61) | 0.74 [−0.04, 1.52] | 0.003 |
| LCWS—impact | 3.39 (1.62) | 3.27 (1.62) | 0.26 [0.05, 0.47] | 3.34 (1.60) | 3.17 (1.62) | 0.28 [0.07, 0.50] | 3.29 (1.60) | 3.30 (1.69) | 0.16 [−0.06, 0.37] | 3.22 (1.66) | 3.32 (1.77) | 0.07 [−0.15, 0.29] | 0.14 |
| +ve test, N (%) | −ve test, N (%) | OR [95% CI] | +ve test, N (%) | −ve test, N (%) | OR [95% CI] | +ve test, N (%) | −ve test, N (%) | OR [95% CI] | +ve test, N (%) | −ve test, N (%) | OR [95% CI] | ||
| LCWS—frequency | 200 (64.52) | 201 (57.59) | 2.52[1.31, 4.83] | 186 (61.59) | 185 (55.72) | 2.43 [1.26, 4.68] | 191 (64.09) | 181 (56.39) | 2.87 [1.48, 5.60] | 168 (58.74) | 178 (56.87) | 1.68 [0.86, 3.27] | 0.50 |
| LCWS—worry | 73 (23.55) | 47 (13.51) | 5.79 [2.66, 12.63] | 55 (18.27) | 53 (16.01) | 2.08 [0.95, 4.56] | 54 (18.24) | 60 (18.69) | 1.45 [0.67, 3.14] | 50 (17.48) | 63 (20.32) | 1.08 [0.50, 2.35] | <0.001 |
Adjusted for study site (Greater Glasgow and Clyde, Tayside), minimization variables (age group, gender and smoking history) and baseline values where measured. M = mean. 1m = 1 month, 3m = 3 months, 6m = 6 months, 12m = 12 months.