Table 7. Output 6.

Poisson regression				Number of obs = 706
				LR chi2(7) = 25059.27
				Prob > chi2 = 0.0000
Log likelihood = -147562.09				Pseudo R2 = 0.0783
articles	Coef.	Std. Err.	z	P>|z|	[95% Conf. Interval]
1.male	.4826418	.0082789	58.30	0.000	.4664155	.4988681
discid
1	-.6577067	.0081169	-81.03	0.000	-.6736155	-.6417979
2	-.4681665	.0086166	-54.33	0.000	-.4850546	-.4512783
countryid
1	.6704021	.0067895	98.74	0.000	.6570949	.6837092
2	.1804392	.0091664	19.68	0.000	.1624733	.1984051
yeardeg	-.0050237	.0003177	-15.81	0.000	-.0056464	-.004401
_cons	14.65639	.632671	23.17	0.000	13.4163	15.8964