Table 1

Characteristics of the study population with and without polypharmacy

Total populationNo polypharmacy, n=3602Polypharmacy,* n=1611
n=5213n%n%
Age group (years)
 60–641362112231.124014.9
 65–69132599427.633120.5
 70–7499165118.134021.1
 75–7987749313.738423.8
 80–844052095.819612.2
 85–891841032.9815.0
 90+69300.8392.4
Sex
 Male2325160144.472444.9
 Female2888200155.688755.1
Ethnicity
 White5090353198155996.8
 Non-white123712523.2
Quintiles of non-pension wealth
 Quintile 1 (poorest)75039110.935922.3
 Quintile 285252514.632720.3
 Quintile 3114378921.935422
 Quintile 4118485123.633320.7
 Quintile 5119997627.122313.8
 Missing85701.9150.9
Multimorbidity2444112131.1132382.1
Excess alcohol1509112831.338123.6
Smoking4943188.817610.9
Body mass index (kg/m2)
 Underweight (<18.5)39320.970.4
 Normal (18.5–24.9)126298927.527316.9
 Overweight (25–29.9)2147158043.956735.2
 Obese (≥30)15639022566141
 Unknown202992.71036.4
Walking speed
 Quartile 1 (fastest)1211103328.717811
 Quartile 2119094626.324415.1
 Quartile 3120184423.435722.2
 Quartile 4 (slowest)120158516.261638.2
 Missing4101945.421613.4
  • *≥5 drugs.