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Table 1 Characteristics of participants at the census and surveys in Trà Cang commune

From: Characterization of Plasmodium falciparum and Plasmodium vivax recent exposure in an area of significantly decreased transmission intensity in Central Vietnam

Description

Census

S1

S2

S3

S4

S5

S6

Months

Aug/Sept 2014

Nov 2014

Jan 2015

Mar 2015

May 2015

July 2015

Nov/Dec 2015

No. surveyed

441 (100%)

347 (78.7%)

358 (81.2%)

295 (66.9%)

296 (67.1%)

280 (63.5%)

323 (73.2%)

Village, n (%)

 Tu Nak

209 (47.4%)

149 (42.9%)

160 (44.7%)

126 (42.7%)

141 (47.6%)

134 (47.9%)

152 (54.3%)

 Xe Xua

189 (42.9%)

161 (49.3%)

167 (49.3%)

146 (49.5%)

132 (44.6%)

114 (40.7%)

138 (49.3%)

 Tak Lang

43 (9.8%)

7 (10.7%)

31 (8.7%)

23 (7.8%)

23 (7.8%)

32 (11.4%)

33 (11.8%)

Agegroups (years)

 0.5–5

76 (17.2%)

73 (21.0%)

76 (21.2%)

72 (24.4%)

63 (21.3%)

69 (24.6%)

78 (24.2%)

 6–20

188 (42.6%)

136 (39.2%)

142 (39.7%)

98 (33.2%)

132 (44.6%)

105 (37.5%)

121 (37.5%)

 21–40

116 (26.3%)

88 (25.4%)

88 (24.6%)

80 (27.1%)

59 (19.9%)

64 (22.9%)

77 (23.8%)

 41–60

43 (9.8%)

36 (10.4%)

38 (10.6%)

30 (10.2%)

29 (9.8%)

29 (10.4%)

34 (10.5%)

 > 60

18 (4.1%)

14 (4.0%)

14 (3.9%)

15 (5.1%)

13 (4.4%)

13 (4.6%)

13 (4.0%)

 Males, (%)

237 (53.7%)

176 (50.7%)

181 (50.6%)

143 (48.5%)

143 (48.3%)

134 (47.9%)

163 (50.5%)

Occupation, n (%)

 Farmer

199 (45.1%)

      

 School

160 (36.3%)

      

 Other

82 (18.6%)

      

Bednet use in previous month (%)

 Always using bednet

 

85.3

80.5

82.4

88.9

93.2

90.1

 Never using bednet

 

5.8

7.5

8.5

5.7

5.7

4.3

 Bednet-users using LLIN

 

100.0

98.5

100.0

99.7

100.0

93.2

Forest fields in previous month (%)

 Proportion that worked in field

 

18.2

56.7

59.7

74.0

71.4

53.3

 Slept in field

 

10.7

12.3

16.6

27.0

26.1

3.7

 Deep forest activities

 

8.6

10.1

4.8

0.3

7.5

9.3

 Slept in deep forest

 

1.4

0.8

1.4

0.0

0.4

0.3

 Slept in other village in previous month

 

0.0

0.3

0.0

0.0

0.4

8.1

Fever (%)

 Reported fever in previous month

 

7.5

0.6

0.3

0.3

0.0

0.0

 Measured fever at survey

 

11.0

1.4

1.0

2.0

2.1

0.0