attimes_bracing

The formatting is crappy but I enjoyed this little puzzle in my new textbook.  It is 'an historical event'.  I got it after a few minutes and found it a really good way to get me thinking about what could cause this mortality pattern.  I expect someone will get it quickly but if not, I'll post the answer tomorrow.

EDIT:  You all know what it is... If you're a bit sunk just ask for the answer in the comments.

	ADULT MALES		ADULT FEMALES		CHILDREN		TOTAL
Class/Socio Econom. Status	TOTAL	% Dead	TOTAL	% Dead	TOTAL	% Dead	TOTAL	% Dead
High	175	67.4	144	2.8	6	0	325	37.5
Medium	168	91.7	93	14	24	0	285	58.6
Low	462	83.8	165	53.9	79	65.8	706	74.8
Other	885	78.3	23	13	0	0	908	76.7
TOTAL	1690	80	425	25.6	109	47.7	2224	68

BTW I'm reading this text book (Webb and Bain) for fun after reading Ghost Map about John Snow's work.   The first chapter has me hooked.