Model 1 β (95% CI) | Model 2 β (95% CI) | Model 3 β (95% CI) | Model 4 β (95% CI) | |
---|---|---|---|---|
Dominant hand | ||||
Exposure | ||||
Lifetime BFD, per 3 months | 0.09 (0.01, 0.16) | 0.09 (0.02, 0.17) | 0.10 (0.02, 0.18) | 0.15 (0.03, 0.28) |
Lifetime BFD, Quartiles | ||||
Q1 | 0.0 (ref) | 0.0 (ref) | 0.0 (ref) | 0.0 (ref) |
Q2 | 0.23 (− 1.10, 1.57) | − 0.34 (− 1.78, 1.09) | − 0.33 (− 1.76, 1.10) | 0.17 (− 1.86, 2.19) |
Q3 | 1.28 (− 0.05, 2.61) | 0.98 (− 0.45, 2.41) | 0.96 (− 0.47, 2.38) | 1.18 (− 0.99, 3.35) |
Q4 | 1.31 (− 0.03, 2.64) | 1.34 (− 0.10, 2.78) | 1.41 (− 0.03, 2.84) | 2.33 (0.10, 4.56) |
Trend-p* | 0.021 | 0.021 | 0.017 | 0.027 |
Average BFD per live birth, per 3 months | 0.08 (− 0.09, 0.25) | 0.13 (− 0.06, 0.31) | 0.15 (− 0.03, 0.34) | 0.16 (− 0.12, 0.43) |
Nondominant hand | ||||
Exposure | ||||
Lifetime BFD, per 3 months | 0.09 (0.02, 0.16) | 0.10 (0.03, 0.17) | 0.10 (0.03, 0.18) | 0.15 (0.03, 0.26) |
Lifetime BFD, Quartiles | ||||
Q1 | 0.0 (ref) | 0.0 (ref) | 0.0 (ref) | 0.0 (ref) |
Q2 | 0.47 (− 0.77, 1.71) | 0.05 (− 1.28, 1.37) | 0.06 (− 1.26, 1.39) | − 0.21 (− 2.08, 1.66) |
Q3 | 1.37 (0.13, 2.61) | 1.22 (− 0.11, 2.54) | 1.19 (− 0.13, 2.51) | 0.94 (− 1.07, 2.94) |
Q4 | 1.58 (0.33, 2.82) | 1.75 (0.41, 3.08) | 1.81 (0.48, 3.14) | 2.50 (0.43, 4.56) |
Trend-p* | 0.005 | 0.003 | 0.002 | 0.010 |
Average BFD per live birth, per 3 months | 0.13 (− 0.03, 0.29) | 0.18 (0.01, 0.35) | 0.20 (0.03, 0.37) | 0.23 (− 0.03, 0.49) |