Putdocx decimal issue

Hello all: I wanted to get the median, and IQR numbers to show only 1 decimal but I am seeing 10. Also, I wanted the leading zeros in the Cox p-values. Any idea how I could use the nformat to make the changes. I tried a bit after reading the help but am unable to.
I have not done -dataex- but I can if it would be useful to others.

Code:

*1 Clear putdocx file from memory, if any.
putdocx clear

*3 Start the putdocx file
putdocx begin

*4 Some putdocx commands
putdocx paragraph
qui count

putdocx text ("The median number of patients in study is `r(N)'")
summ agedx, detail
putdocx text (" with a median age of `r(p50)' (IQR: `r(p25)', `r(p75)').")

local x anymis
stcox ib0.`x' ib0.age70
matrix list r(table)
scalar b = round(r(table)[1,2], 0.01)
local b = scalar(b)
scalar l = round(r(table)[5,2], 0.01)
local l = scalar(l)
scalar u = round(r(table)[6,2], 0.01)
local u = scalar(u)

putdocx text ( " Missense mutations were associated with favorable outcome (HR:`b', 95% CI: `l', `u').")
*5 Save the putdocx contents to a file, call it putdocxfil
putdo

cx save putdocx_file, replace