Table 2. Multi-adjusted analysis of sodium excretion in early RA and matched controls.

Dependent variable: 24-hour sodium excretion	partial eta squared	p
Corrected model	0.223	0.031
Smoking (yes/no)	0.023	0.337
Anti-hypertensive drugs (yes/no)	0.115	0.026
Nonsteroidal anti-inflammatory drugs (yes/no)	0.044	0.179
Disease (rheumatoid arthritis yes/no)	0.096	0.043

ANCOVA analysis adjusted for smoking, anti-hypertensive and nonsteroidal anti-inflammatory drug use.