The study brought new information about DSQ validity. The correlations between DSQ subscales, describing the factors of treatment stigma, secrecy, perceived stigma, public or mirrored stigma, and self-stigma, which were not present in the validation part of the study, showed up in the main experimental part of it. All subscales correlated with one another, which contributes to, and strengthens, the internal accuracy of the whole DSQ and the accuracy of particular subscales. Correlations between all subscales and depressive symptoms bring an additional contribution to the accuracy of DSQ, as they reaffirm that stigma is related to depression.