Table 5.
Patient example—ARIMA model AIC and LL for ICP and MAP—using 10-s and minute averaged data
| ARIMA Model | 10-s mean data | Minute mean data | ||||||
|---|---|---|---|---|---|---|---|---|
| ICP AIC | ICP LL | MAP AIC | MAP LL | ICP AIC | ICP LL | MAP AIC | MAP LL | |
| (0,1,0) | 196388.8 | − 98192.4 | 269930.5 | − 134963 | 39569.24 | − 19782.6 | 71689.08 | − 35842.5 |
| (0,1,1) | 196368.8 | − 98181.4 | 265609.2 | − 132802 | 38779.78 | − 19386.9 | 68214.99 | − 34104.5 |
| (0,1,2) | 192234.3 | − 96113.1 | 265437.9 | − 132715 | 38678.96 | − 19335.5 | 68141.03 | − 34066.5 |
| (0,1,3) | 190875.4 | − 95432.7 | 265199.9 | − 132595 | 38608.42 | − 19299.2 | 68085.34 | − 34037.7 |
| (0,1,4) | 190771.8 | − 95379.9 | 265201.8 | − 132595 | 38571.06 | − 19279.5 | 68023.08 | − 34005.5 |
| (1,1,0) | 196379 | − 98186.5 | 266268.8 | − 133131 | 38960.74 | − 19477.4 | 69664.86 | − 34829.4 |
| (1,1,1) | 192440.5 | − 96216.3 | 265351.4 | − 132672 | 38589.53 | − 19290.8 | 68118.71 | − 34055.4 |
| (1,1,2) | 190892.8 | − 95441.4 | 265305 | − 132647 | 38549.22 | − 19269.6 | 67983.68 | − 33986.8 |
| (1,1,3) | 190791 | − 95389.5 | 265201.9 | − 132595 | 38551.12 | − 19269.6 | 67985.65 | − 33986.8 |
| (1,1,4) | 190770 | − 95378 | 265203.7 | − 132595 | 38478.1 | − 19232.1 | 67987.03 | − 33986.5 |
| (2,1,0) | 193682.1 | − 96837 | 265874.4 | − 132933 | 38830.76 | − 19411.4 | 68976.31 | − 34484.2 |
| (2,1,1) | 190776.9 | − 95383.5 | 265278.4 | − 132634 | 38549.59 | − 19269.8 | 68038.36 | − 34014.2 |
| (2,1,2) | 190778.9 | − 95383.4 | 265220.9 | − 132604 | 38551.23 | − 19269.6 | 67985.63 | − 33986.8 |
| (2,1,3) | 190772.4 | − 95379.2 | 265160.8 | − 132573 | 38552.94 | − 19269.5 | 67987.45 | − 33986.7 |
| (2,1,4) | 190757 | − 95370.5 | 265150.6 | − 132567 | 38554.87 | − 19269.4 | 67989.04 | − 33986.5 |
| (3,1,0) | 192186.7 | − 96088.3 | 265385.2 | − 132688 | 38753.15 | − 19371.6 | 68750.63 | − 34370.3 |
| (3,1,1) | 190778.8 | − 95383.4 | 265187.1 | − 132588 | 38551.15 | − 19269.6 | 67991.69 | − 33989.8 |
| (3,1,2) | 190780.8 | − 95383.4 | 265146.3 | − 132566 | 38553.44 | − 19269.7 | 67988.98 | − 33987.5 |
| (3,1,3) | 190781.7 | − 95382.8 | 265148.3 | − 132566 | 38549.55 | − 19266.8 | 67988.83 | − 33986.4 |
| (3,1,4) | 190739.8 | − 95360.9 | 265140.9 | − 132561 | 38557.21 | − 19269.6 | 67989.47 | − 33985.7 |
| (4,1,0) | 191405.4 | − 95696.7 | 265215.2 | − 132602 | 38689.2 | − 19338.6 | 68607.28 | − 34297.6 |
| (4,1,1) | 190727.9 | − 95357 | 265174.7 | − 132580 | 38553.08 | − 19269.5 | 67991.2 | − 33988.6 |
| (4,1,2) | 190781.3 | − 95382.7 | 265148.7 | − 132566 | 38555.06 | − 19269.5 | 67993.81 | − 33988.9 |
| (4,1,3) | 190783.9 | − 95383 | 265146.6 | − 132564 | 38549.9 | − 19265.9 | 67982.67 | − 33982.3 |
| (4,1,4) | 190449.4 | − 95214.7 | 265142.4 | − 132561 | 38549.27 | − 19264.6 | 67991.68 | − 33985.8 |
Comparing the optimal AIC and LL for ICP and MAP, between 10-s and minute mean data, there is no substantial difference in the time series structure. This pattern was found in all 31 of the patients included in this study, with this patient’s data displayed as an example
AIC akaike information criterion, ARIMA autoregressive integrative moving average, ICP intracranial pressure, MAP mean arterial pressure