Table 1.
Overview of basic characteristics for whole sample.
| Variable | Is measured in | Mean (+/- SD) | Range | N (available data) | Percentage available data (%) | Defined categories | N (in each category) | Type of assessment | Duration of assessment (in minutes) | Effort |
|---|---|---|---|---|---|---|---|---|---|---|
| Age | Years | 77.82 (± 4.87) | 70.07–96.17 | 880 | 100 | 70–75 years | 272 | B | 0 | 1 |
| 75–80 years | 332 | |||||||||
| 80–85 years | 188 | |||||||||
| >85 years | 76 | |||||||||
| Gender | Categorical: Female/Male | 880 | 100 | Female | 434 | B | 0 | 1 | ||
| Male | 446 | |||||||||
| Education | Years | 12.23 (± 2.98) | 3–18 | 863 | 98.07 | A | 1 | 1 | ||
| ASA | Score | 2.81 (± 0.62) | I–IV | 871 | 98.98 | Score I + II | 240 | A | 3 | 1 |
| Score III | 545 | |||||||||
| Score IV | 86 | |||||||||
| Clinical frailty score | Score | 3.59 (± 1.35) | 1–8 | 871 | 98.98 | Score 1–3 | 476 | A, pm | 1 | 1 |
| Score 4–8 | 395 | |||||||||
| Polypharmacy | Drugs per day | 880 | 100 | ≤5 drugs | 377 | A, pm | 2 | 1 | ||
| >5 drugs | 503 | |||||||||
| ≤10 drugs | 771 | |||||||||
| >10 drugs | 109 | |||||||||
| ≤5 drugs | 377 | |||||||||
| 6–10 drugs | 394 | |||||||||
| >10 drugs | 109 | |||||||||
| Multimorbidity | Number of diseases | 6.19 (± 2.57) | 0–20 | 880 | 100 | ≤4 diseases | 236 | A | 2 | |
| 5–8 diseases | 563 | |||||||||
| ≥9 diseases | 81 | |||||||||
| Charlson comorbidity index | Score | 2.16 (± 0.92) | 1–4 | 880 | 100 | Score 1 + 2 | 605 | A | 2 | 2 |
| Score 3 + 4 | 275 | |||||||||
| MoCA (nasreddine) | Points | 26.85 (± 4.20) | 5–29 | 855 | 97.16 | ≥26 points | 276 | C, V, A | 13 | 3 |
| <26 points | 580 | |||||||||
| MoCA (<23) | ≥23 points | 565 | ||||||||
| <23 points | 291 | |||||||||
| TMT A | Seconds | 48.71 (± 28.86) | 20–180 | 777 | 88.30 | C, V | 4 | 2 | ||
| z-Score | 0.17 (± 1.77) | −9.75–3.36 | ≥-1.28 z | 699 | ||||||
| <-1.28 z | 65 | |||||||||
| TMT B | Seconds | 159.71 (± 70.62) | 22–300 | 732 | 83.41 | C, V | 6 | 2 | ||
| z-Score | −0.59 (± 1.50) | −6.16–3.16 | ≥-1.28 z | 534 | ||||||
| <-1.28 z | 187 | |||||||||
| Digit span | Longest Range | 5.11 (± 2.12) | 0–14 | 819 | 93.07 | ≥5 points | 488 | C, V | 4 | 2 |
| <5 points | 331 | |||||||||
| Pre-existing dementia | Categorical: Yes/No | 880 | 100 | No | 868 | A | 3 | 1 | ||
| Yes | 14 | |||||||||
| Alcohol consumption | Categorical: | 877 | 99.66 | ≤3 drinks | 874 | A, pm | 3 | 1 | ||
| Drinks per day | >3 drinks | 3 | ||||||||
| Categorical: | ≤3 drinks | 852 | ||||||||
| Drinks per week | >3 drinks | 25 | ||||||||
| Smoking | Categorical: | 880 | 100 | ≤5 cigarettes | 840 | A, pm | 1 | 1 | ||
| Cigarettes per day | >5 cigarettes | 40 | ||||||||
| Auditory impairment | Categorical: | 865 | 98.30 | No ear | 487 | S, pm | 2 | 1 | ||
| Ears impaired | One ear | 182 | ||||||||
| Both ears | 196 | |||||||||
| Visual impairment | Categorical: | 839 | 95.34 | No | 658 | S, pm | 2 | 1 | ||
| Vision impaired | Yes | 181 | ||||||||
| Sensory impairment | Categorical: | 835 | 94.89 | None | 86 | S, pm | 4 | 2 | ||
| Number of senses impaired | One sense | 478 | ||||||||
| Both senses | 271 | |||||||||
| Hyposmia | Number of correctly identified Sniffin-Sticks | 9.03 (± 2.31) | 0–12 | 728 | 82.73 | No Yes |
499 229 |
S | 10 | 2 |
| Cut-to-suture-time | Minutes | 146.84 (± 84.36) | 28–543 | 879 | 99.89 | <90 min. | 305 | P | ||
| 90–180 min. | 296 | |||||||||
| >180 min. | 278 | |||||||||
| Renal failure | Creatinine-Clearance in mmol/l | 193.95 (± 1375.68) | 0.4–9990 | 880 | 100 | >45 mmol/ml <45 mmol/ml |
752 108 |
L, pm | 1 | 2 |
| Cardio-pulmonary bypass | Categorical: Yes/No |
876 | 99.55 | No Yes |
638 238 |
P | ||||
| Surgery type | Categorical: | 880 | 100 | No | 551 | P | ||||
| Cardio-vascular Surgery | Yes | 329 |
Overview of basic characteristics for all the patients (n = 880). All the patients underwent elective surgery and were assessed for having delirium at least once. For continuous data, mean, standard deviation, and range are given. If categories were defined or only categorical data were assessed, the categories defined and the number of patients in each group is given. Additionally, the type of assessment is defined (B, basic data; A, anamnestic or personal history; C, cognitive assessment; S, sensory assessment; P, perioperative assessment; pm, indicates if variable is partially modifiable). Duration of assessment in minutes as well as the overall effort on a scale from 1 to 3 is stated as well.