I have come across these two pages: p1 p2.
Whey discuss about the structure : "as ... than".
They are talking about the following sentences:
1 Test conducted on babies reveal that baby girls respond almost twice as much to a loud sound than do boys.
2 Tests conducted on babies reveal that baby girls respond twice more often to a loud sound than do baby boys.
3 Tests conducted on babies reveal that baby girls respond twice more often to a loud sound than baby boys do.
There are some contradictory opinions on these pages and I got confused.
Also in this page it has been written:
4 Men were twice as likely to be arrested for drink driving than women, at 26% and 14% respectively.
Which ones of these sentences are correct? When can I use the structure "as ... than"? Can I totally forget about "as ... than" and always use "as ... as" which seems a safer choice? For example, can we readily substitute "than" with "as" in the above sentences?