Table 1-2

Relative risk^2-1-150 (with 95% confidence interval (CI)) of developing rheumatoid factor positive rheumatoid arthritis for different stress symptoms among 52 260 participants of the Mobile Clinic Health Examination Survey

Symptom	Number of subjects with each symptom	Number of incident cases	Relative risk	95% CI
Nervousness	7 725	55	0.95	0.71 to 1.27
Fatigue	10 091	74	1.01	0.78 to 1.32
Sweating	8 828	48	0.72	0.53 to 0.97
Heart pounding	8 509	68	1.12	0.85 to 1.47
Headache	5 544	46	1.10	0.81 to 1.51

Number of symptoms^2-1-151	52 260	343	0.97	0.85 to 1.12

↵2-1-150 Adjusted for age, sex, and smoking history.
↵2-1-151 Continuous variable; relative risk per one symptom.