Table 3. Linear mixed effects models and log linear mixed effects models for reaction time [ms], throughput, and RTCV in the PVT in day and night shifts without training test bout, adjusted for various factors and beta-logistic mixed effects model for errors (% of lapses, % of false starts) in the PVT in day and night shifts without training test bout, adjusted for various factors and considering repeated measurements over study days.
| Factor | Reference | Category | Model 1* | Model 2** | ||
|---|---|---|---|---|---|---|
| Reaction time | 95% CI | 95% CI | ||||
| Intercept | 217.53 | 204.15; 230.90 | 209.06 | 193.01; 225.12 | ||
| Shift type | Day shift | Night shift | 7.50 | 0.74; 14.26 | 7.64 | 0.94; 14.35 |
| Study day | 1st day | 2nd day 3rd day |
-2.46 -4.03 |
-4.67; -0.26 -7.08; -0.98 |
-2.46 -4.06 |
-4.67; -0.25 -7.11; -1.01 |
| Age (per 10 years) | 4.94 | 1.63; 8.25 | 6.01 | 2.32; 9.71 | ||
| Chronotype | Intermediate | Early Late |
- | - | -7.36 1.09 |
-16.42; 1.71 -6.96; 9.13 |
| Obstructive sleep apnea | No | Yes | - | - | 4.55 | -2.90; 12.01 |
| Season | Winter | Spring Fall Summer |
- | - | 1.23 9.79 6.33 |
-8.20; 10.71 -0.06; 19.65 -3.75; 16.40 |
| Throughput | ||||||
| Intercept | 274.65 | 250.19; 299.12 | 293.73 | 265.09; 322.37 | ||
| Shift type | Day shift | Night shift | -14.84 | -27.20; -2.48 | -15.52 | -27.49; -3.56 |
| Study day | 1st day | 2nd day 3rd day |
2.49 8.68 |
-1.66; 6.63 2.95; 14.41 |
2.49 8.71 |
-1.66; 6.64 2.98; 14.44 |
| Age (per 10 years) | -11.73 | -17.78; -5.67 | -15.34 | -21.93; -8.75 | ||
| Chronotype | Intermediate | Early Late |
19.45 -5.40 |
3.29; 35.62 -19.74; 8.96 |
||
| Obstructive sleep apnea | No | Yes | -13.08 | -26.38; 0.21 | ||
| Season | Winter | Spring Fall Summer |
2.20 15.12 -3.71 |
-14.67; 19.06 -32.70; 2.46 -21.68; 14.26 |
||
| 95% CI | 95% CI | |||||
| RTCV | ||||||
| Intercept | 21.90 | 18.20; 26.36 | 21.05 | 16.77; 26.41 | ||
| Shift type | Day shift | Night shift | 0.99 | 0.90; 1.09 | 0.99 | 0.90; 1.09 |
| Study day | 1st day | 2nd day 3rd day |
1.00 1.02 |
0.94; 1.05 0.94; 1.10 |
1.00 1.02 |
0.94; 1.05 0.94; 1.10 |
| Age (per 10 years) | 1.06 | 1.01; 1.10 | 1.07 | 1.02; 1.13 | ||
| Chronotype | Intermediate | Early Late |
0.91 1.00 |
0.80; 1.03 0.89; 1.12 |
||
| OSA | No | Yes | 1.01 | 0.91; 1.12 | ||
| Season | Winter | Spring Fall Summer |
0.99 1.04 0.95 |
0.86; 1.13 0.91; 1.20 0.82; 1.09 |
||
| Lapses [%] | ||||||
| Intercept | 0.03 | 0.01; 0.05 | 0.02 | 0.01; 0.03 | ||
| Shift type | Day shift | Night shift | 1.49 | 1.08; 2.06 | 1.55 | 1.16; 2.08 |
| Study day | 1st day | 2nd day 3rd day |
0.99 0.83 |
0.87; 1.12 0.69; 0.98 |
0.99 0.82 |
0.87; 1.12 0.69; 0.98 |
| Age (per 10 years) | 1.26 | 1.08; 1.47 | 1.37 | 1.18; 1.59 | ||
| Chronotype | Intermediate | Early Late |
- | - | 0.63 1.22 |
0.41; 0.94 0.87; 1.71 |
| Obstructive sleep apnea | No | Yes | - | - | 1.50 | 1.11; 2.03 |
| Season | Winter | Spring Fall Summer |
- | - | 0.91 1.35 0.95 |
0.59; 1.40 0.88; 2.06 0.61; 1.51 |
| False starts [%] | ||||||
| Intercept | 0.02 | 0.01; 0.08 | 0.03 | 0.01; 0.12 | ||
| Shift type | Day shift | Night shift | 1.05 | 0.55; 2.02 | 1.03 | 0.59; 1.80 |
| Study day | 1st day | 2nd day 3rd day |
0.94 0.95 |
0.69; 1.29 0.62; 1.46 |
0.94 0.95 |
0.71; 1.25 0.65; 1.41 |
| Age (per 10 years) | 1.10 | 0.81; 1.50 | 1.10 | 0.82; 1.48 | ||
| Chronotype | Intermediate | Early Late |
- | - | 0.71 0.64 |
0.34; 1.46 0.32; 1.32 |
| Obstructive sleep apnea | No | Yes | - | - | 0.64 | 0.33; 1.27 |
| Season | Winter | Spring Fall Summer |
- | - | 1.18 0.82 0.63 |
0.56; 2.45 0.36; 1.86 0.26; 1.51 |
*Model 1 is adjusted for study day and age.
**Model 2 is adjusted for all variables in the table.