Arroll wrote that the study ended before all the gossip magazines had vanished for "fear of a waiting room riot".
He said the study was based on "good science" but was a chance for him, PhD candidate Stowe Alrutz and statistician Simon Moyes to feature in the journal.
"It's extremely difficult to get an article in [the BMJ]. For most researchers it's the pinnacle of their career."
Arroll, who works in South Auckland and is head of general practice and primary healthcare at Auckland University, said the study was funded through family and friends donating magazines.
He used his own money to buy new magazines. In the study Arroll said: "Quantification of this phenomenon was urgently needed. Practices should consider using old copies of the Economist or Time magazine as a first step towards saving costs."