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. Author manuscript; available in PMC: 2010 Feb 1.
Published in final edited form as: J Clin Epidemiol. 2008 Aug 22;62(2):158–166. doi: 10.1016/j.jclinepi.2008.06.002

Table 3.

Factors Significantly Associated with Fair/Poor Health Status Ratings

Model 1
Fx lims only
Model 2
VLA difficulty only
Model 3
Fx lims & VLA difficulty
RA
Sociodemographic
 Married/partner 1.58 (0.96, 2.61)* 1.72 (1.03, 2.89) 1.73 (1.03, 2.91)
Health-related
 Fatigue 1.29 (1.14, 1.45) 1.26 (1.12, 1.42) 1.25 (1.11, 1.42)
Disease-specific
 Pain rating 1.01 (1.00, 1.02) 1.01 (1.00, 1.02) 1.01 (1.00, 1.02)
Function
 Functional limitations 1.41 (1.25, 1.60) ---
 VLA total --- 7.19 (3.82, 13.51) 5.19 (2.21, 12.21)
AIC 454.47 439.13 439.99
SLE
Sociodemographic
 Married/partner 1.32 (0.91, 1.90) 1.34 (0.92, 1.95)
 Female 0.58 (0.30, 1.14) .60 (0.31, 1.14) 0.55 (0.28, 1.07)
 Education, > high school 1.44 (0.84, 2.44)
Health-related
 Comorbidities, 2+ 1.66 (1.01, 2.71) 1.97 (1.20, 3.24) 1.76 (1.06, 2.90)
Disease-specific
 Rating of SLE activity 1.28 (1.19, 1.38) 1.20 (1.11, 1.30) 1.20 (1.10, 1.29)
Function
 Functional limitations 2.55 (2.13, 3.06) --- 1.65 (1.30, 2.10)
 VLA total --- 7.88 (5.33, 11.64) 3.89 (2.35, 6.43)
AIC 789.68 776.26 761.65
COPD
Sociodemographic
 Female 0.62 (0.34, 1.12) 0.64 (0.35, 1.16)
 Education, > high school 0.65 (0.36, 1.17) 0.55 (0.30, 0.99) 0.60 (0.33, 1.09)
Health-related
 Comorbidities, 2+ 3.60 (1.63, 7.97) 3.83 (1.74, 8.41) 3.41 (1.53, 7.60)
 Fatigue 1.53 (1.32, 1.77) 1.47 (1.26, 1.70) 1.45 (1.25, 1.69)
Disease-specific
 Current smoking 2.05 (1.04, 4.05) 1.94 (0.97, 3.89) 1.92 (0.96, 3.85)
 COPD severity score 1.10 (1.04, 1.16) 1.06 (1.00, 1.13) 1.06 (1.00, 1.13)
Function
 Functional limitations 1.31 (1.13, 1.52) --- 1.18 (1.00, 1.40)
 VLA total --- 3.96 (1.86, 8.42) 2.71 (1.16, 6.28)
AIC 357.96 355.84 354.07
*
Odds ratios (95% confidence interval) from multiple logistic regression analyses. All analyses included age, sex, race, marital status, education, comorbidities, fatigue, and functional limitations, and the following disease-specific characteristics:
  • RA: pain rating.
  • SLE: rating of lupus activity.
  • COPD: COPD Severity Score, current smoking status.

Only associations significant at p≤0.20 are shown.

AIC = Akaieke’s Information Criterion