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Table 1 Socioeconomic characteristics and self-reported prevalence of symptoms and diseases in the study participants

From: Interrelationships among common symptoms in the elderly and their effects on health-related quality of life: a cross-sectional study in rural Korea

Characteristics Participants
N = 1328
Mean age, years (SD)   70.0 (5.9)
Education, n (%) Less than elementary school 502 (37.8)
Elementary school 542 (40.8)
Middle school 179 (13.5)
High school or higher 105 (7.9)
Living alone, n (%) Yes 317 (23.9)
No 1011 (76.1)
Household incomea, 10,000 won/month, n (%) < 50 293 (23.0)
50–99 469 (36.8)
100–199 362 (28.4)
≥ 200 152 (11.9)
Symptoms, n (%) Fatigue 728 (54.8)
Pain 755 (56.9)
Sleep disturbance 443 (33.4)
Indigestion 335 (25.2)
Depression/anger/anxiety 353 (26.6)
Number of symptoms, n (%) 0 314 (23.6)
1 257 (19.4)
2 274 (20.6)
3 211 (15.9)
4 184 (13.9)
5 88 (6.6)
Diagnosed diseasesb, n (%) Hypertension 889 (66.9)
Obesity 690 (52.0)
Dyslipidemia 555 (41.8)
Arthritis 399 (30.0)
Diabetes mellitus 217 (16.3)
  1. aFifty-two participants (3.9 %) refused to answer the question related to household income
  2. bOf the collected information on twenty-eight diseases, the five most prevalent diseases are listed in the table