Table 3.
Inter-item Correlation for QoR-15K Scores Taken 24 h after Surgery
| QoR-15K item | Total QoR-15K Score | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Able to breathe easy | 0.354† | - | ||||||||||||||
| Been able to enjoy food | 0.169 | 0.403† | - | |||||||||||||
| Feeling rested | 0.676† | –0.005 | –0.145 | - | ||||||||||||
| Have had a good sleep | 0.302 | 0.079 | 0.099 | 0.301 | - | |||||||||||
| Able to look after personal toilet and hygiene unaided | 0.258 | –0.056 | –0.056 | 0.222 | 0.377† | - | ||||||||||
| Able to communicate with family or friends | * | * | * | * | * | * | - | |||||||||
| Getting support from hospital doctors and nurse | 0.264 | 0.302 | –0.081 | 0.074 | –0.111 | –0.039 | * | - | ||||||||
| Able to return to work or usual home activities | 0.483† | 0.288 | 0.269 | 0.108 | –0.046 | 0.322 | * | 0.182 | - | |||||||
| Feeling comfortable and in control | 0.370† | 0.226 | –0.100 | 0.188 | 0.132 | 0.562† | * | 0.805 | 0.336† | - | ||||||
| Having a feeling of general well-being | 0.534† | 0.351 | –0.090 | 0.255 | –0.039 | –0.128 | * | 0.067 | 0.152 | –0.015 | - | |||||
| Moderate pain | 0.599† | –0.015 | –0.010 | 0.414† | 0.388† | 0.127 | * | 0.174 | 0.022 | 0.216 | 0.314 | - | ||||
| Severe pain | 0.218 | –0.081 | –0.081 | 0.067 | –0.111 | –0.039 | * | 0.486† | 0.175 | 0.368† | 0.000 | 0.250 | - | |||
| Nausea or vomiting | 0.520† | 0.286 | 0.024 | 0.326† | –0.056 | 0.299 | * | –0.111 | 0.275 | 0.086 | 0.361† | –0.008 | 0.159 | - | ||
| Feeling worried or anxious | 0.397† | –0.100 | –0.100 | 0.436† | 0.132 | 0.562† | * | 0.379† | 0.336† | 0.638† | –0.076 | 0.216 | 0.368† | 0.086 | - | |
| Feeling sad or depressed | 0.234 | 0.282 | 0.282 | 0.294 | –0.111 | –0.039 | * | –0.056 | 0.143 | –0.069 | 0.257 | 0.023 | –0.056 | 0.159 | 0.368† | - |
QoR-15K: Korean version of 15-item Quality of Recovery.
*
Following QoR-15K item had zero variance because all patients gave a score of 10/10 and thus, the inter-item correlation could not be calculated.
†
P < 0.05 was considered statistically significant.