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Table 1 Characteristics of the participants and prevalences of infections

From: Social networks in relation to self-reported symptomatic infections in individuals aged 40–75 - the Maastricht study –

Individual characteristics % (n = 3004) or Mean (SD)
Sex
- Men 51.2 (n = 1537)
- Women 48.8 (n = 1467)
Age 60.0 (8.2)
Educational level
- Low 33.4 (n = 980)
- Medium 28.1 (n = 823)
- High 38.5 (n = 1129)
Employment status
- Employed 39.0 (n = 1172)
- Unemployed/ retired 51.0 (n = 1531)
- Not known 10.0 (n = 301)
Diabetes status
- No type 2 diabetes 71.3 (n = 2141)
- Type 2 diabetes 28.7 (n = 863)
Body Mass Index
- Normal (< 25 kg/m2) 35.6 (n = 1067)
- Overweight (25–30 kg/m2) 42.3 (n = 1268)
- Obese (≥30 kg/m2) 22.2 (n = 666)
Alcohol consumption
- Non-consumers (no alcohol use) 18.3 (n = 537)
- Low consumers ((≤7 glasses per week for women; ≤ 14 glasses per week for men) 56.0 (n = 1645)
- High consumers (>  7 glasses per week for women; > 14 glasses per week for men) 25.7 (n = 755)
Smoking status
- Never 34.6 (n = 1020)
- Former 52.0 (n = 1529)
- Current 13.4 (n = 394)
Infections (self-reported, past 2 months)
- Upper respiratory infection (URI) 31.1 (n = 921)
- Lower respiratory infection (LRI) 11.5 (n = 339)
- Urinary tract infection (UTI) 5.7 (n = 170)
- Gastrointestinal tract infection (GI) 12.5 (n = 370)
Month of assessment
- May–October 52.7 (n = 1584)
- November–April 47.3 (n = 1420)