[cem] Error when performing imbalance

Hello, I’ve just begun to use CEM package for R. My database has 657 obs., no missing values, treatment is a dummy (1 is treated, 0 is untreated). This is a summary of my variables: [1] TRUE Treatment Female Size Pcoffee Min. :0.0000 Min. :0.0000 Min. : 0.084 Min. :0.008333 1st Qu.:0.0000 1st Qu.:0.0000 1st Qu.: 1.400 1st Qu.:0.333333 Median :1.0000 Median :0.0000 Median : 3.000 Median :0.600000 Mean :0.6591 Mean :0.1492 Mean : 6.072 Mean :0.585863 3rd Qu.:1.0000 3rd Qu.:0.0000 3rd Qu.: 7.500 3rd Qu.:0.833333 Max. :1.0000 Max. :1.0000 Max. :64.000 Max. :1.000000 Age5 Age5.15 Age15 Productivity Min. :0.0000 Min. :0.0000 Min. :0.0000 Min. : 16.43 1st Qu.:0.0000 1st Qu.:0.0000 1st Qu.:0.0000 1st Qu.: 720.00 Median :0.0000 Median :1.0000 Median :0.0000 Median :1271.89 Mean :0.2907 Mean :0.6058 Mean :0.1035 Mean :1393.20 3rd Qu.:1.0000 3rd Qu.:1.0000 3rd Qu.:0.0000 3rd Qu.:1920.00 Max. :1.0000 Max. :1.0000 Max. :1.0000 Max. :7119.05 Familiness Poverty GDP Min. :0.00000 Min. : 0.00 Min. : 2653 1st Qu.:0.05096 1st Qu.: 8.60 1st Qu.: 2671 Median :0.43421 Median :23.90 Median : 6516 Mean :0.46640 Mean :33.57 Mean : 5914 3rd Qu.:0.85000 3rd Qu.:55.00 3rd Qu.: 7526 Max. :1.00000 Max. :99.60 Max. :12069 I’m trying to calculate the imbalance but I get the following error: Error in t1 > 0 & t2 > 0 : non-conformable arrays I could implement the cem function without problems, but if I include eval.imbalance = TRUE in the argument, I get the same error: Error in t1 > 0 & t2 > 0 : non-conformable arrays G0 G1 All 224 433 Matched 35 52 Unmatched 189 381 Do you have any idea of what could be wrong with the database? Thank you in advance for your help. Best Regards, *Sara Benetti* | *Researcher * *INCAE Business School <https://www.incae.edu/en>*