Cognitive assessment results for the NIPPV group at assessments 1 and 2
| Assessment 1 Mean (SD) | Assessment 2 Mean (SD) | p Value | |
| Digit span (raw score) | 8.63 (2.56) | 9.25 (2.19) | 0.301 |
| Story recall immediate (standardised score) | 92.80 (11.62) | 99.36 (13.50) | 0.176 |
| Story recall delayed (standardised score) | 93.53 (11.98) | 97.40 (9.72) | 0.237 |
| List learning (standardised score) | 85.58 (9.07) | 100.13 (8.88) | 0.0173-150 |
| List recall (standardised score) | 90.29 (11.44) | 99.24 (11.86) | 0.093 |
| KOLT (raw score) | 37.14 (5.84) | 43.00 (3.37) | 0.0403-150 |
| Verbal fluency index (seconds/word) | 10.99 (8.11) | 8.45 (5.65) | 0.063 |
↵3-150 p<0.05.