Estimation of regression parameter Standard error P*
Intercept 184.77 2.50  
Announcement (ref=obligation)    
0 -60.72 4.89 <.0001
1 -55.27 9.73 <.0001
2 -57.96 7.22 <.0001
Intercept 177.20 9.70  
Vision (ref=2)      
0 -17.13 10.62 .11
1 -2.07 10.42 .84
Intercept 185.46 7.44  
Investment (ref=3)      
0 -30.82 8.16 .0002
1 -17.41 8.87 .05
2 -5.09 12.55 .68
Intercept 172.00 5.67  
Offering (ref=1)      
0 -10.94 6.36 .09
*P value of the test comparing each class to the reference one.
Table 2: Relationships between gestational term (in days) and the four qualitative scores - univariate analysis - Four linear regression models.
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