Table 1. Study participant characteristics (n = 8752)
SexFrequency, n (%)
Male2273 (26.1)
Female6452 (73.9)
Missing27
Age, years
<301522 (17.4)
30–645512 (63.0)
≥65 years1718 (19.6)
Missing0
Deprivation quintile
1 (most deprived)975 (11.5)
21427 (16.8)
31710 (20.1)
42279 (26.8)
5 (least deprived)2108 (24.8)
Missing253
Rurality
Urban settlement >10 0005130 (60.4)
Town or fringe settlement1507 (17.7)
Village, hamlet, and isolated dwellings1862 (21.9)
Missing253
Current mental health problem
No6010 (71.8)
Yes2362 (28.2)
Missing380
History of mental illness
No5664 (66.9)
Yes2800 (33.1)
Missing288
Marital status
Not married1940 (30.4)
Married4445 (69.6)
Missing2367
Have children
No2998 (35.8)
Yes5375 (64.2)
Missing379
Smoking status
Never smoked4756 (56.2)
Previous smoker2890 (34.2)
Current smoker810 (9.6)
Missing296
Physical exercise in the past week
None3107 (36.7)
Some but <1 hour1197 (14.1)
≥1 hour, but <3 hours1994 (23.6)
≥3 hours2166 (25.6)
Missing288
Ever diagnosed with asthma
No5926 (83.6)
Yes1164 (16.4)
Missinga 1662
Ever diagnosed with DM
No6657 (93.9)
Yes433 (6.1)
Missinga 1662
Ever diagnosed with CVD
No6854 (96.7)
Yes236 (3.3)
Missinga 1662
Ever diagnosed with COPD
No7032 (99.2)
Yes58 (0.8)
Missinga 1662
Consulting frequency
Never4866 (71.4)
Less than once a year1076 (15.8)
About once a year812 (11.9)
Twice or more per year65 (1.0)
Missinga 1933
Antibiotic prescribing frequency
Less than once a year5791 (81.7)
Once or more per year1299 (18.3)
Missinga 1662
  • aOwing to non-linkage. COPD = chronic obstructive pulmonary disease. CVD = cardiovascular disease. DM = diabetes mellitus.