Hi,

i need help!

I'm testing seasonality in trend research about a rare disease. I found statistical significance over eight year of analysis (96 time points) by applying a generalized linear model.
Then i calculate monthly mean and performed a graph (cycleplot, with a graphical clear seasonality).. I'd like to obtain a line connecting my monthly means.. but i can't found the right command.

My GLM command: (glm trend i.month c.year cos_1 sin_1 time, family (poisson) link(log) eform)
My Cycleplot command: (cycleplot mean month year, xla(1/12) sy(i) myla(J F M A M J J A S O N D)

mean correspond to the combined trend mean over each month

i attached what i obtained and what i'd like to obtain

Can someone help me?