Table III.

The estimates of the log hazards ratio of the effect of fibrinogen level and their within-cohort standard errors, for the 17 fibrinogen cohorts that do not provide full details of X₂.

Cohort		σ2
15	0.438	0.342
16	0.484	0.115
17	0.154	0.120
18	0.660	0.252
19	0.290	0.083
20	0.333	0.117
21	0.122	0.147
22	0.666	0.349
23	0.219	0.053
24	0.354	0.126
25	0.553	0.148
26	0.338	0.087
27	0.439	0.083
28	0.215	0.045
29	0.304	0.278
30	0.429	0.108
31	1.190	0.499