Table 2. Sex-specific prevalence of acute myocardial infarction by hour of the day.

Hour	Overall	Statistical parameter	Male	Statistical parameter	Female	Statistical parameter
23:31–0:30	103	X 2 = 237.85p<0.001	79	X 2 = 175.49p<0.001	24	X 2 = 74.753pP<0.001
00:31–01:30	25		20		5
01:31–02:30	25		21		4
02:31–03:30	39		33		6
03:31–04:30	23		18		5
04:31–05:30	39		29		10
05:31–06:30	46		37		9
06:31–07:30	55		44		11
07:31–08:30	115		87		28
08:31–09:30	60		46		14
09:31–10:30	79		61		18
10:31–11:30	78		67		11
11:31–12:30	82		61		21
12:31–13:30	57		45		12
13:31–14:30	84		71		13
14:31–15:30	102		77		25
15:31–16:30	74		59		15
16:31–17:30	76		61		15
17:31–18:30	59		47		12
18:31–19:30	45		35		10
19:31–20:30	61		46		15
20:31–21:30	44		36		8
21:31–22:30	52		43		9
22:31–23:30	44		36		8

The numbers indicate the total count for each hour.