Table 1 Comparison of patient characteristics between the clusters of individual post-traumatic stress trajectories
Predictor variables | Included into analysis (N = 175) | Clusters of individual post-traumatic stress trajectories (N = 175) | |||
|---|---|---|---|---|---|
(No. of patients with complete data) | Stable low N = 104 (59.4%) | Increasing N = 45 (25.7%) | Recovering N = 26 (14.9%) | P-value | |
Intervention group | 94 (53.7%) (N = 175) | 60 (57.7%) | 17 (37.8%) | 17 (65.4%) | 0.035 |
Age (years) | 61 [51.5, 72] (N = 175) | 62 [51.75, 1.25] | 58 [51, 72] | 60.5 [53, 71.75] | 0.793 |
Female sex | 57 (32.6%) (N = 175) | 28 (26.9%) | 23 (51.1%) | 6 (23.1%) | 0.008 |
Higher education | 44 (25.1%) (N = 175) | 24 (23.1%) | 10 (22.2%) | 10 (38.5%) | 0.236 |
Married | 92 (53.2%) (N = 173) | 52 (50.5%) | 27 (60%) | 13 (52%) | 0.561 |
ICD-10 F-diagnosis before ICU stay | 22 (16.7%) (N = 132) | 10 (12.7%) | 9 (24.3%) | 3 (18.8%) | 0.283 |
Charlson Comorbidity Index | 3 [1, 5] (N = 174) | 3 [2, 5] | 2 [1, 4] | 3.5 [1, 6] | 0.1 |
Mech. ventilation during ICU stay | 148 (85.1%) (N = 174) | 83 (80.6%) | 40 (88.9%) | 25 (96.2%) | 0.097 |
Renal replacement therapy during ICU stay | 48 (27.6%) (N = 174) | 25 (24.3%) | 14 (31.1%) | 9 (34.6%) | 0.475 |
ICU length-of-stay (days) | 24 [13, 42.75] (N = 162) | 23.5 [12, 42.8] | 25.5 [16.3, 44] | 19.5 [13, 35.5] | 0.539 |
No. of ICD-10 diagnoses at discharge | 9 [6, 14] (N = 166) | 9 [6, 13] | 9 [6, 16] | 10 [6.5, 13.5] | 0.525 |
Pain intensity at one month (GCPS) | 50 [26.67, 60] (N = 173) | 50 [27.5, 62.5] | 43.33 [26.7, 53.3] | 50 [30.8, 62.5] | 0.513 |
Cognitive functioning at one month (TICS-M) | 34 [31, 36] (N = 175) | 34 [31, 36] | 34 [32, 36] | 34.5 [31, 36] | 0.62 |
No. of traumatic memories of the ICU > 2 at one month | 61 (35.1%) (N = 174) | 29 (27.9%) | 21 (47.7%) | 11 (42.3%) | 0.048 |
Severity of post-traumatic symptoms at one month(PTSS-10 sum score) | 21 [15, 29.5] (N = 175) | 20 [15, 28] | 19 [14, 25] | 31.5 [22, 38] |  ≤ 0.001 |