Table 3.
Mn Blood descriptives over various time points, stratified by time of day
| Morning | Afternoon | Afternoon - Morning* | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| n | AM | SD | 95% CI | n | AM | SD | 95% CI | n | AM | SD | 95% CI | |
|
|
|
|
||||||||||
| Day | 600 | 8.84 | 3.84 | 570 | 8.38 | 3.19 | 557 | −0.45 | 0.13 | (−0.70, −0.19) | ||
| Week | ||||||||||||
| Begin | 315 | 8.95 | 3.79 | 301 | 8.51 | 3.30 | 299 | −0.38 | 0.19 | (−0.76, −0.02) | ||
| End | 285 | 8.72 | 3.90 | 269 | 8.23 | 3.06 | 258 | −0.53 | 0.19 | (−0.90, −0.16) | ||
| End - Begin** | 600 | −0.25 | 0.24 | (−0.71, 0.21) | 570 | −0.33 | 0.16 | (−0.65, −0.01) | ||||
| Quarter | ||||||||||||
| Begin | 335 | 8.91 | 3.81 | 313 | 8.29 | 3.14 | 309 | −0.64 | 0.20 | (−1.04, −0.24) | ||
| End | 265 | 8.75 | 3.88 | 257 | 8.49 | 3.25 | 248 | −0.22 | 0.16 | (−0.53, 0.08) | ||
| End - Begin** | 600 | −0.18 | 0.24 | (−0.64, 0.29) | 570 | 0.21 | 0.17 | (−0.12, 0.53) | ||||
AM = arithmetic mean
*
Paired t-test to assess difference in blood Mn over the course of a day (Afternoon - Morning) stratified by time of week and time of quarter
**
Linear mixed model including subject as a random effect to estimate paired difference in blood Mn over the course of a week and quarter, stratified by time of day