Hi, I am wanting to compare the mean of an outcome amongst male and female children in households with a male pensioner to those in households with a female pensioner. The pension variables are such that it takes on the value 0 if there is no pensioner or the pensioner is not the specified gender. Using multiple over() statements I see I have to generate 2 graphs. One comparing means in male-pensioner households to households with no pensioners and the other comparing means in female-pensioner households to those with no pensioners. Is it possible to only have one graph that compares households with male pensioners to those with female pensioners, ignoring the households with no pensioners.