In case you mean to say as single author and joint author or co-authorship basis, then any answer served would be hypothetical unless not supported with empirical evidence.
These are the bibliometric studies of two prominent library science journals published in India. the results show that of the total research articles published in these two journals during the last decade (viz. during the period of study) almost 63-66% research articles were published on co-authorship basis, while as 34-37% were published as single author articles.