how to pull variables from cfit object?

how to pull coefficients with such as 70% confidence bounds from cfit object? the cfit object was came from fit function.

cfit(fitresult)

ans =

     General model Sin1:
     ans(x) =  a1*sin(b1*x+c1)
     Coefficients (with 95% confidence bounds):
       a1 =       10.08  (10.05, 10.1)
       b1 =        5086  (5085, 5088)
       c1 =       1.655  (1.652, 1.657)

Answer 1

[Steven Lord]

You use one of the postprocessing functions on the cfit object.

[Peng Kong]

thanks! confint function