. 2020 Nov 26;20:1805. doi: 10.1186/s12889-020-09923-8

Table 4.

Multivariate Cox Proportional Hazard Model Adjusted for Fibrinogen

Characteristics	NHANES III 1988–1994			NHANES 1999–2002
Characteristics	Hazard Ratio	95% Confidence Interval	P-value	Hazard Ratio	95% Confidence Interval	P-value
*Fibrinogen (mg/dL)*	1.001	1.000–1.002	0.07	1.00	0.998–1.002	0.75
*Race/Ethnicity*
White^a	1			1
Black	1.26	0.98–1.63	0.07	1.30	0.74–2.27	0.35
Hispanics/Other	0.89	0.60–1.32	0.56	1.27	0.62–2.58	0.50
*Gender*
Male^a	1			1
Female	0.70	0.54–0.89	0.005	0.52	0.27–1.01	0.05
*Education*
Below High School^a	1			1
High School/Equivalent	1.31	1.00–1.73	0.05	1.18	0.57–2.46	0.65
Above High School	1.18	0.80–1.75	0.40	0.70	0.31–1.60	0.39
*Income Level*
Low^a	1			1
Middle	0.85	0.70–1.04	0.11	1.19	0.69–2.04	0.53
High	0.78	0.55–1.11	0.16	1.52	0.76–3.04	0.23
*Occupation*
Blue Collar, Semi-Routine^a	1			1
White Collar and Professional	0.89	0.59–1.32	0.55	0.75	0.43–1.31	0.30
White Collar, Semi-Routine	0.93	0.60–1.45	0.75	1.10	0.62–1.94	0.73
Blue Collar, High Skill	1.03	0.67–1.59	0.89	1.30	0.87–1.95	0.20
Not Working	1.31	0.76–2.25	0.32	0.94	0.28–3.14	0.91
*Body Mass Index (kg/m*²)
Underweight^a	1			1
Normal	1.36	0.71–2.59	0.35	1.84	0.37–9.25	0.44
Overweight	1.08	0.60–1.94	0.80	2.07	0.45–9.51	0.34
Obese	1.63	0.86–3.11	0.13	2.84	0.58–14.04	0.19
*Smoking*
Never^a	1			1
Former	1.69	1.16–2.45	0.01	2.24	1.32–3.80	0.004
Current	3.87	2.87–5.23	< 0.001	7.17	4.23–12.16	< 0.001
*Physical Activity*
About the Same^a	1			1
Less Active	1.15	0.85–1.55	0.35	1.19	0.60–2.35	0.61
More Active	0.69	0.55–0.85	0.001	0.90	0.47–1.70	0.73

^a Reference group

^b Physical activity compared to others of same age