Table 3.
Linear regression coefficients (b1) of main effect of Cumulative Exposure Index (mg/m3-workyears) on acceleration capacity (msec) and deceleration capacity(msec) for all 50 participants.
| Parameter |
aAcceleration Capacity(AC) Beta CEI (95% C.I.) |
Deceleration Capacity(DC) Beta CEI (95% C. I.) |
|---|---|---|
| Models | ||
| Model 1 | 0.43 (−0.03, 0.89) | −0.39 (−0.78, 0.01) |
| Model 2 | *1.04 (0.16, 1.92) | −0.70 (−1.47, 0.06) |
| Model 3 | *1.02 (0.12, 1.91) | −0.69 (−1.47, 0.09) |
| Model 4 | *1.03 (0.10, 1.96) | −0.67 (−1.49, 0.14) |
a
Acceleration Capacity is measured on a negative scale, therefore positive estimates connote a decrease in AC on a negative scale.
*
indicate significant associations (p<0.05)
Model 1(crude), Model 2(age-adjusted), Model 3 (adjusted for age and time of day), Model 4 (adjusted for age, time of day and last weld day)
CEI=Cumulative Exposure Index (mg/m3-workyears)
Age=The residual of age on CEI was used to represent the heart age (variation in age not explained by the exposure) (years)
TOD=Time of Day ECG was taken (AM vs PM)
LWD=Last Weld Day (acute effects)