The Economics of Community Open Source Software Projects: An Empirical Analysis of Maintenance Effort

Table 7

Summary overview of research hypotheses and results.

Hypothesis	Metrics	Supported results
(H1)	Time Entropy	Community OS applications are less entropic than proprietary applications.
(H2)	Time Entropy	In community OS projects, time entropy cannot be related to
	Refactoring Frequency	periodic refactoring.
(H3)	Time Entropy	Higher time entropy is associated with higher unit maintenance effort.
	Unit Maintenance Effort