A British survey suggests women not only read more books, they tend to read them differently. “almost half of women are 'page turners' who finish a book soon after starting it compared to only 26 per cent of men. The survey 2,000 adults also found those who take a long time to read books and only managed one or two a year were twice as likely to be male than female.”
Might not be a sex difference so much as an occupation effect.
I'd likely read fiction all the way through, but if I was trying to fix a compressor or figure out how to control the mildew on my squash, or look up how to run a Tobit model I'd just turn to that section in the book. I'd no more start at the front and go to the back in a short time than I'd read the NYSE tables starting with "A" and ending with "Z" every morning.