Table 7. Mean number of articles and...

Table 7.

Mean number of articles and pairwise t-test p-values by theory type

Theory type	EP	PP	AA	EE	DA
Mean (2007–2009)	3.000	1.000	0.389	0.167	0.111
EP	–
PP	<0.001	–
AA	<0.001	0.052	–
EE	<0.001	0.001	0.352	–
DA	<0.001	0.001	0.263	0.700	–
Mean (2017–2019)	4.500	1.167	0.056	0.444	0.278
EP	–
PP	<0.001	–
AA	<0.001	0.003	–
EE	<0.001	0.064	0.078	–
DA	<0.001	0.015	0.080	0.473	–
DiD test (p-values)	0.020	0.665	0.151	0.220	0.291

Theory type	EP	PP	AA	EE	DA
Mean (2007–2009)	3.000	1.000	0.389	0.167	0.111
EP	–
PP	<0.001	–
AA	<0.001	0.052	–
EE	<0.001	0.001	0.352	–
DA	<0.001	0.001	0.263	0.700	–
Mean (2017–2019)	4.500	1.167	0.056	0.444	0.278
EP	–
PP	<0.001	–
AA	<0.001	0.003	–
EE	<0.001	0.064	0.078	–
DA	<0.001	0.015	0.080	0.473	–
DiD test (p-values)	0.020	0.665	0.151	0.220	0.291

Note(s):

Pairwise comparisons are based on independent-sample t-tests. DiD denotes difference-in-differences tests comparing changes across the two periods (2007–2009 and 2017–2019). Reported values are p-values

Source(s): Authors’ own creation

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