Sample | Adjusted R2 | Model p-value | Parameter | Estimate | T-value | p-value |
---|---|---|---|---|---|---|
All | 0.4178 | < 2.2e-16 | Int | −0.0145 ± 0.0012 | −12.46 | < 2e-16 |
Slope | 0.4912 ± 0.0097 | 50.61 | < 2e-16 | |||
Wye | 0.7077 | < 2.2e-16 | Int | −0.0354 ± 0.0060 | −5.93 | 1.18e-8 |
Slope | 0.6813 ± 0.0296 | 23.00 | < 2e-16 | |||
North American | 0.2829 | < 2.2e-16 | Int | −0.0070 ± 0.0013 | −5.53 | 3.48e-8 |
 |  |  | Slope | 0.4100 ± 0.0113 | 36.36 | < 2e-16 |