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Table 1 Baseline characteristics of participants from the June 2013 cross-sectional survey, by recorded history of clinical malaria (2005–13)

From: History of malaria treatment as a predictor of subsequent subclinical parasitaemia: a cross-sectional survey and malaria case records from three villages in Pailin, western Cambodia

  Case record of
clinical malaria n = 122 (9 %)
No case record of
clinical malaria n = 1221 (91 %)
All villagers
n = 1343
P value*
Gender (male) 81 (66 %) 597 (49 %) 687 (51 %) <0.001
Age (years; mean) 26.8 24.1 24.3 0.107
Age groups (years)
 0–4.9 2 (2 %) 161 (13 %) 163 (12 %)  
 5.0–14.9 31 (25 %) 334 (27 %) 365 (27 %)  
 15.0–44.9 70 (57 %) 511 (42 %) 581 (43 %)  
 ≥45.0 19 (16 %) 215 (18 %) 234 (17 %) <0.001
Village
 Krachap Leu 30 (25 %) 436 (36 %) 466 (35 %)  
 O Kting 38 (31 %) 240 (20 %) 278 (21 %)  
 Phnom Dambang 54 (44 %) 545 (45 %) 599 (45 %) 0.004
Occupation
 Child or student 35 (29 %) 525 (43 %) 560 (42 %)  
 Farmer other land 20 (16 %) 102 (8 %) 122 (9 %)  
 Farmer own land 56 (46 %) 443 (36 %) 499 (37 %)  
 Farm labourer 8 (7 %) 101 (8 %) 109 (8 %)  
 Other 3 (3 %) 50 (4 %) 53 (4 %) 0.002
Recent forest visit 11 (9 %) 38 (3 %) 49 (4 %) 0.001
Recent travel history 23 (19 %) 243 (20 %) 266 (20 %) 0.782
Bed net use
 Regular 118 (97 %) 1193 (98 %) 1311 (98 %)  
 Irregular 4 (3 %) 28 (2 %) 32 (2 %) 0.496
Low grade fever ≥37.5 °C 4 (3 %) 69 (6 %) 73 (5 %) 0.270
Fever, by self-report at survey 18 (15 %) 148 (12 %) 166 (12 %) 0.401
Illness, self-report at survey 32 (26 %) 371 (30 %) 403 (30 %) 0.334
  1. * Comparing those with and without a clinical history of malaria