Hello,

I did the U test. How shall I interpret? P value is insignificant. Does that mean that there is no shape? my model is linear without the squared term?

. utest agemo sq_age

Specification: f(x)=x^2

Extreme point: 42.57625

Test:

H1: U shape

vs. H0: Monotone or Inverse U shape

-------------------------------------------------

| Lower bound Upper bound

-----------------+-------------------------------

Interval | .00274 64.56667

Slope | -.0673668 .0347968

t-value | -15.02906 8.016549

P>|t| | 1.65e-50 6.40e-16

-------------------------------------------------

Overall test of presence of a U shape:

t-value = 8.02

P>|t| = 6.40e-16

Thanks so much

I did the U test. How shall I interpret? P value is insignificant. Does that mean that there is no shape? my model is linear without the squared term?

. utest agemo sq_age

Specification: f(x)=x^2

Extreme point: 42.57625

Test:

H1: U shape

vs. H0: Monotone or Inverse U shape

-------------------------------------------------

| Lower bound Upper bound

-----------------+-------------------------------

Interval | .00274 64.56667

Slope | -.0673668 .0347968

t-value | -15.02906 8.016549

P>|t| | 1.65e-50 6.40e-16

-------------------------------------------------

Overall test of presence of a U shape:

t-value = 8.02

P>|t| = 6.40e-16

Thanks so much

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