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Table 6 Standardized mean differences between one group and the other two combined for the North American ecoregion

From: The effects of nutrients on stream invertebrates: a regional estimation by generalized propensity score

Variable Unadjusted Adjusted for the GPS
[1.77, 2.35] [2.35, 2.69] [2.69, 3.80] [1.77, 2.35] [2.35, 2.69] [2.69, 3.80]
ELEV 1.24 − 1.95 − 0.71 0.74 − 2.57 0.14
Longitude 0.35 − 0.64 − 0.30 0.77 − 0.57 − 0.95
Log(PRECIP) 2.82 0.27 3.10 0.79 0.52 2.28
Log(AREA) − 1.23 2.17 0.93 − 0.62 1.99 1.95
Log(CL) − 3.75 1.30 − 2.23 − 2.35 1.53 − 1.89
Log(HCO3) − 0.65 − 0.71 − 1.37 1.08 − 1.05 − 0.89
Log(SO4) − 1.66 0.87 − 0.75 0.59 1.31 − 1.17
SED − 1.21 − 0.67 − 1.90 − 1.49 − 0.23 − 1.66
STRMTEMP − 2.69 2.35 − 0.27 − 2.03 1.71 1.38
Percent.AGT − 0.89 − 1.35 − 2.29 − 0.43 − 1.59 − 3.11
Percent.URB − 0.94 1.11 0.19 − 0.61 2.55 − 0.73
Percent.Canopy − 1.11 − 0.31 − 1.43 − 0.72 − 0.66 − 1.05
Riparian.Disturb − 1.02 0.22 − 0.79 0.72 0.57 0.56
  1. See Table 3 caption for explanation