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Table 2 Basic information and clinical characteristics of 271 acute diarrhea cases and 149 controls over 5 years

From: Case–control study of diarrheal disease etiology in individuals over 5 years in southwest China

Characteristic Diarrhea Control
n (%) n (%)
n 271 149
Age
 5–15 years 21 (7.7) 9 (6.0)
 15–50 years 175 (64.6) 94 (63.1)
 ≥50 years 75 (27.7) 46 (30.9)
Sex
 Male 133 (49.1) 73 (49.0)
 Female 138 (50.9) 76 (51.0)
Residence
 Urban 184 (67.9) 99 (66.4)
 Rural–urban fringe zone 68 (25.1) 35 (23.5)
 Rural 19 (7.0) 15 (10.1)
Seasons
 Spring (Feb–Apr) 87 (32.1) 32 (21.5)
 Summer (May–Jul) 65 (24.0) 42 (28.2)
 Autumn (Aug–Oct) 59 (25.5) 45 (30.2)
 Winter (Nov–Jan) 50 (18.5) 30 (37.5)
Symptom
 Fever (>37.3 °C) 23 (8.5)
 Abdominal pain 73 (26.9)
 Nausea 91 (33.6)
 Vomiting 58 (21.4)
 Dehydration 3 (1.1)
 Tenesmus 5 (1.8)
Diarrhea  
 Watery stool 70 (25.8)
 Mucus stool 173 (63.8)
 Other stool 28 (10.3)
  1. SD represent for standard deviation. Kunming city (25º 02′ 20″ N, 102º 43′05″ E, 1891 m.a.s.l.) has a humid subtropical climate of moderate seasonality characterized by a mild (mean temperature = 11.4 °C, min = 8, max = 15) and dry (mean precipitation = 33.4 mm, min = 12, max = 89) autumn (Aug–Oct) and winter (Nov–Jan). Spring (Feb–Apr) and summer (May–Jul) are also mild (mean temperature = 23 °C, min = 19, max = 29) but wet (mean precipitation = 159.6 mm, min = 92, max = 206) seasons. The “–” symbol indicates the information can not be collected