Table 3 Odds ratios (OR) and 95% confidence intervals (95% CI) for multivariable analyses of factors potentially associated to VAS global, EuroQol and HAQ

Sex

Women

1.0

1.0

1.0

Men

0.59 (0.43–0.82)

2.09 (1.50–2.93)

0.45 (0.32–0.63)

Age

1.02 (1.01–1.04)

0.98 (0.97–0.99)

1.04 (1.03–1.06)

Disease duration

1.04 (1.01–1.08)

1.00 (0.96–1.04)

1.06 (1.02–1.10)

Alcohol use

None

1.0

1.0

1.0

Non-Hazardous

0.72 (0.43–1.20)

1.24 (0.74–2.07)

0.92 (0.55–1.53)

Hazardous

0.64 (0.36–1.16)

1.48 (0.82–2.68)

0.70 (0.38–1.26)

Socio-economic group

Blue collar

1.0

1.0

1.0

Lower white collar

0.69 (0.51–0.92)

1.54 (1.14–2.08)

0.81 (0.60–1.10)

Upper white collar

0.44 (0.25–0.80)

1.56 (0.88–2.79)

0.64 (0.36–1.16)

Self-employed

2.58 (0.51–13.10)

5.81 (0.69–48.74)

0.35 (0.07–1.79)

Others

0.88 (0.31–2.47)

1.04 (0.34–3.12)

0.54 (0.18–1.66)

Smoking

Never

1.0

1.0

1.0

Previous

0.79 (0.57–1.08)

0.95 (0.68–1.32)

1.02 (0.73–1.42)

Current

1.06 (0.70–1.61)

0.58 (0.38–0.88)

1.46 (0.95–2.26)

No. DMARDs or biologics

1.15 (1.04–1.28)

0.71 (0.63–0.79)

1.51 (1.34–1.71)