. 2012 Aug 30;176(6):534–543. doi: 10.1093/aje/kws125

Table 2.

Relative Risks for Every Unit Increase or Category Change in the Predictors: Results From Multinomial Logistic Regressions at Baseline (n = 433^a), Women's Health and Aging Study II, 1994–2009

Predictor	Physical Activity Trajectory Profile^b
	Stable Moderate (n = 140, 32.3%)			Fast Declining (n = 83, 19.2%)			Always Sedentary (n = 138, 31.9%)
	RR	95% CI	P Value^c	RR^d	95% CI	P Value	RR^d	95% CI	P Value
Age, years
70–74	1	Referent		1	Referent		1	Referent
75–80	0.60	0.33, 1.08	0.09	0.77	0.41, 1.47	0.42	1.05	0.59, 1.87	0.87
Race
White	1	Referent		1	Referent		1	Referent
Nonwhite	2.06	0.87, 4.87	0.10	1.14	0.43, 3.02	0.80	1.88	0.79, 4.46	0.16
Years of education	0.96	0.87, 1.05	0.35	0.89	0.81, 0.99	0.03	0.96	0.88, 1.05	0.36
Living alone	0.67	0.37, 1.19	0.17	1.15	0.61, 2.19	0.66	1.04	0.58, 1.84	0.90
Body mass index^e
<18.5	0.37	0.08, 1.68	0.20	0.46	0.08, 2.62	0.38	0.55	0.14, 2.21	0.40
18.5–24.9	1	Referent		1	Referent		1	Referent
25–29.9	1.22	0.64, 2.33	0.55	1.57	0.77, 3.20	0.22	1.03	0.53, 1.99	0.94
≥30	2.51	0.95, 6.59	0.06	1.83	0.62, 5.39	0.27	3.97	1.54, 10.26	0.004
Self-reported health
Excellent	1	Referent		1	Referent		1	Referent
Very good	0.76	0.35, 1.68	0.50	1.63	0.61, 4.33	0.33	0.80	0.34, 1.92	0.62
Good	0.81	0.36, 1.86	0.62	1.76	0.64, 4.83	0.27	2.20	0.93, 5.19	0.07
Fair/poor	2.87	0.55, 14.91	0.21	5.69	0.95, 33.90	0.06	7.28	1.40, 37.82	0.02
No. of diseases^f	1.24	0.92, 1.69	0.16	1.24	0.89, 1.73	0.21	1.70	1.26, 2.30	0.001
Coronary artery disease	2.96	0.96, 9.15	0.06	2.19	0.65, 7.40	0.21	5.04	1.69, 15.04	0.004
Chronic obstructive pulmonary disease	1.83	0.81, 4.14	0.15	2.77	1.18, 6.50	0.02	2.97	1.35, 6.57	0.007
Diabetes	0.86	0.27, 2.68	0.79	0.42	0.10, 1.86	0.25	1.40	0.48, 4.10	0.54
Osteoarthritis	1.01	0.55, 1.87	0.97	1.15	0.58, 2.29	0.68	1.20	0.64, 2.23	0.57
Cancer	0.67	0.24, 1.89	0.45	0.85	0.28, 2.58	0.78	0.96	0.36, 2.53	0.93
Smoking status
Never smoker	1	Referent		1	Referent		1	Referent
Former smoker	1.15	0.61, 2.19	0.66	1.34	0.67, 2.70	0.41	1.65	0.87, 3.12	0.12
Current smoker	1.12	0.42, 2.99	0.83	0.65	0.19, 2.24	0.50	1.61	0.61, 4.24	0.34
Geriatric Depression Scale score	1.19	1.06, 1.34	0.003	1.19	1.05, 1.34	0.005	1.28	1.14, 1.43	<0.001
Mobility disability	1.81	0.88, 3.71	0.11	1.14	0.51, 2.58	0.75	3.88	1.94, 7.78	<0.001
Self-efficacy
High	1	Referent		1	Referent		1	Referent
Medium	1.84	0.90, 3.74	0.09	1.58	0.72, 3.49	0.26	2.27	1.12, 4.60	0.02
Low	1.74	0.58, 5.22	0.33	3.14	1.04, 9.46	0.04	2.91	1.02, 8.31	0.04
Energy level^g	0.77	0.63, 0.93	0.006	0.81	0.66, 0.99	0.04	0.65	0.53, 0.78	<0.001

Abbreviations: CI, confidence interval; RR, relative risk.

^a Three of the 436 women were missing data on activity measures and were therefore excluded from the analysis

^b Estimated from the joint latent class and survival model.

^c Two-sided P value.

^d The always active class was the reference category.

^e Weight (kg)/height (m)².

^f Presence of definite diseases, including angina pectoris/myocardial infarction, congestive heart failure, peripheral artery disease, hip fractures, osteoarthritis of the hip, knee and/or hand, Parkinson's disease, rheumatoid arthritis, osteoporosis, stroke, pulmonary diseases, diabetes mellitus, cancer, spinal stenosis, and disc disease.

^g Energy level was rated on a Likert scale from 0–10, where 0 denoted no energy and 10 denoted the most energy that you have ever had.