You will have to be proficient with raw 212-219,225-227,241-246,250 events to capture the numerics generated by /stats commands and then also with /did commands to update your listbox.
212 RPL_STATSCOMMANDS
213 RPL_STATSCLINE
214 RPL_STATSNLINE
215 RPL_STATSILINE
216 RPL_STATSKLINE
217 RPL_STATSQLINE
218 RPL_STATSYLINE
219 RPL_ENDOFSTATS
225 RPL_STATSZLINE
226 RPL_STATSCOUNT
227 RPL_STATSGLINE
241 RPL_STATSLLINE
242 RPL_STATSUPTIME
243 RPL_STATSOLINE
244 RPL_STATSHLINE
245 RPL_STATSSLINE
246 RPL_STATSXLINE
250 RPL_STATSCONN