Don't believe it 100%; statistics for the communist period are hard to interpret. Should you subtract something form people's income if they can't spend the mon

Don't believe it 100%; statistics for the communist period are hard to interpret. Should you subtract something form people's income if they can't spend the money? If prices are kept stable by decree but people have to queue longer/shorter to buy them, is that 0% inflation, or should the change in wait times be factored in? This isn't to say that communism did badly. It is to say that interpreting the statistics has special challenges. Other things I've read concluded that communism did well for the people up to the sixties, except Stalin's calamities, then increasingly not. And Russia now, not.