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I did time-dependent covariate analyses with cox regression in R. But I wonder if the interpretation is the same as for a cox model with a fixed covariate?

Context  : in my analysis the physical activity score index was analyzed twice at 5 and 10 months, some people relapse lung cancer others did not.

Here is the HR that I obtained with a score index as continous variable : 0.65 (0.80-1.30)

Despite my research, I don't know if I can interpret it as a classic cox model or not.

Thank you

I did time-dependent covariate analyses with cox regression in R. But I wonder if the interpretation is the same as for a cox model with a fixed covariate?

Context: in my analysis the physical activity score index was analyzed 5 months after their lung cancer remission period and then 5 more months after that, i.e. 10 months after remission. Some people relapse lung cancer between 5 and 10 months after remission, and others did not. I created my dataframe with the time intervals so the physical activity index score at the second line (i.e. at 10 months) changes. My baseline is 5 months so t start is 0 days.

Here is the HR that I obtained with a score index as continous variable : 0.65 (0.80-1.30)

Despite my research, I don't know if I can interpret it as a classic cox model or not.

I did time-dependent covariate analyses with cox regression in R. But I wonder if the interpretation is the same as for a cox model with a fixed covariate?

Context : in my analysis the physical activity score was analyzed twice at 5 and 10 months, some people relapse lung cancer others did not. Here is the HR that I obtained: 0.65 (0.80-1.30)

Despite my research, I don't know if I can interpret it as a classic cox model or not.

Thank you

I did time-dependent covariate analyses with cox regression in R. But I wonder if the interpretation is the same as for a cox model with a fixed covariate?

Context : in my analysis the physical activity score index was analyzed twice at 5 and 10 months, some people relapse lung cancer others did not.

Here is the HR that I obtained with a score index as continous variable : 0.65 (0.80-1.30)

Despite my research, I don't know if I can interpret it as a classic cox model or not.

Thank you

I did time-dependent covariate analyses with cox regression in R. But I wonder if the interpretation is the same as for a cox model with a fixed covariate?

Context : in my analysis the physical activity score was analyzed twice at 5 and 10 months, some people relapse lung cancer others did not. Here is the HR that I obtained: 0.65 (0.80-1.30)

Despite my research, I don't know if I can analyze it as a classic cox model or not.

Thank you

I did time-dependent covariate analyses with cox regression in R. But I wonder if the interpretation is the same as for a cox model with a fixed covariate?

Context : in my analysis the physical activity score was analyzed twice at 5 and 10 months, some people relapse lung cancer others did not. Here is the HR that I obtained: 0.65 (0.80-1.30)

Despite my research, I don't know if I can interpret it as a classic cox model or not.

Thank you