Table 1 Distribution of odds ratio, P... | American Society of Hematology

Table 1

Distribution of odds ratio, P values, and 95% confidence intervals according to putative risk factors † for case patients and controls

Risk factors	Case patients		Controls		OR‡ overall	P value‡	OR§ idiopathic	95% CI§
Risk factors	Yes	No	Yes	No	OR‡ overall	P value‡	OR§ idiopathic	95% CI§
Male	219	296	224	331	¶	¶	¶	¶
Diabetes	131	384	85	470	2.1	< 0.001	2.6	1.7-3.8
Hypertension	256	259	258	297	1.3	0.09	1.3	0.95-1.9
Cigarette smoking	232	283	217	338	1.3	0.02	1.3	0.97-1.9
Obesity	211	302	255	300	0.83	0.13	1.2	0.90-1.7
Exercise	225	290	320	235	0.56	< 0.001	0.63	0.46-0.86
Family history of venous thromboembolism	90	321	49	465	2.7	< 0.001	3.2	2.1-5.1
Factor V Leiden	6	509	1	554	6.6	0.08	4.4	0.39-48.2
Prothrombin mutation	4	511	0	555	∞‖	0.05‖	∞‖	0.96‖

Risk factors	Case patients		Controls		OR‡ overall	P value‡	OR§ idiopathic	95% CI§
Risk factors	Yes	No	Yes	No	OR‡ overall	P value‡	OR§ idiopathic	95% CI§
Male	219	296	224	331	¶	¶	¶	¶
Diabetes	131	384	85	470	2.1	< 0.001	2.6	1.7-3.8
Hypertension	256	259	258	297	1.3	0.09	1.3	0.95-1.9
Cigarette smoking	232	283	217	338	1.3	0.02	1.3	0.97-1.9
Obesity	211	302	255	300	0.83	0.13	1.2	0.90-1.7
Exercise	225	290	320	235	0.56	< 0.001	0.63	0.46-0.86
Family history of venous thromboembolism	90	321	49	465	2.7	< 0.001	3.2	2.1-5.1
Factor V Leiden	6	509	1	554	6.6	0.08	4.4	0.39-48.2
Prothrombin mutation	4	511	0	555	∞‖	0.05‖	∞‖	0.96‖

CI indicates confidence interval.

Risk factors are self-reported except for the factor V Leiden and prothrombin mutation.

Odds ratio (OR) and P values are adjusted for age and sex.

Odds ratio pertains to 229 idiopathic cases and all controls with adjustment for age and sex.

Matching factor.

Unadjusted (crude) results with exact mid P value or lower confidence limit.