Table 3

Results from the multinomial logistic regression analysis, regarding the number of conditions. Reference category: none condition identified

Number of conditions
1≥2
OR (95% CI)P valueOR (95% CI)P value
Sex
 Women1.001.00
 Men0.74 (0.57 to 0.96)0.0240.61 (0.43 to 0.88)0.009
Age
 65–75 years1.001.00
 >75 years1.10 (0.84 to 1.43)0.4831.60 (1.14 to 2.24)0.007
Regional area
 North/Centre/Lisbon1.001.00
 Alentejo/Algarve1.46 (1.02 to 2.07)0.0390.88 (0.55 to 1.42)0.629
 Madeira/Azores1.21 (0.88 to 1.65)0.5550.50 (0.30 to 0.84)0.179
Residence
 Home1.001.00
 Institutionalised0.94 (0.49 to 1.77)0.8381.47 (0.76 to 2.84)0.261
Marital status
 Single/divorced/widower1.001.00
 Married/common-law marriage0.77 (0.58 to 1.00)0.0500.58 (0.40 to 0.84)0.003
Education level
 Without education1.001.00
 1–4 years0.77 (0.52 to 1.12)0.1730.74 (0.47 to 1.15)0.176
 5–12 years0.65 (0.40 to 1.06)0.0820.36 (0.18 to 0.72)0.004
 Higher education0.39 (0.20 to 0.78)0.0080.23 (0.07 to 0.73)0.014
Household income
 <500€1.001.00
 500–999€0.97 (0.65 to 1.45)0.8650.50 (0.30 to 0.83)0.008
 ≥1000€0.80 (0.49 to 1.30)0.3610.56 (0.28 to 1.13)0.103
 Does not know or does not declare0.91 (0.63 to 1.31)0.6190.72 (0.47 to 1.10)0.124
Self-perception of health status
 Very good/good1.001.00
 Fair1.18 (0.90 to 1.53)0.2271.94 (1.29 to 2.90)0.001
 Poor/very poor1.64 (1.11 to 2.41)0.0125.61 (3.50 to 9.01)<0.001
Smoking status
 Non-smoker1.001.00
 Smoker0.87 (0.65 to 1.17)0.6351.06 (0.69 to 1.60)0.899
Alcohol consumption
 None1.001.00
 Moderate (W: ≤1/day; M: ≤2/day)0.85 (0.65 to 1.11)0.2330.77 (0.54 to 1.10)0.147
 Excessive (W: >1/day; M: >2/day)0.91 (0.60 to 1.39)0.6740.68 (0.36 to 1.26)0.219
Medication use
 01.001.00
 1–41.52 (1.08 to 2.14)0.0201.71 (1.31 to 2.25)0.047
 ≥51.81 (1.21 to 2.70)0.0053.11 (1.77 to 5.46)<0.001
 Unknown1.66 (0.95 to 2.91)0.0792.56 (1.80 to 3.66)0.008
Cognitive function (MMSE)
 Not impaired1.001.00
 Impaired0.83 (0.47 to 1.47)0.5211.84 (1.37 to 2.48)0.040
  • Bold text indicates a statistically significant difference with a p-value less than 0.05.

  • M, men; MMSE, Mini-Mental State Examination; W, women.