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Table 1 Unweighted analysis of recruitment patterns and social network sizes

From: Respondent-driven sampling on the Thailand-Cambodia border. I. Can malaria cases be contained in mobile migrant workers?

  Cambodian Myanmar
Variables M1 * (n = 350) (%) M2 ** (n = 475) (%) M1 * (n = 871) (%) M2 ** (n = 19) (%)
Received coupon from     
   Friend 17.1 9.3 34.8 21.1
   Spouse 0.6 0.4 2.1 5.3
   Relatives 9.7 2.5 35.7 42.1
   Neighbour 38.0 4.6 17.0 26.3
   Workplace 31.1 77.3 2.5 -
   Employer 1.1 1.3 0.8 -
   Newly met person 5.7 4.4 7.9 5.3
Number of times recruiter seen in past month     
   Mean 19.5 16.0 16.9 17.8
   Median (IQR) 20 (10-29) 12(10-28) 24(4-28) 28(4-30)
Frequency of seeing recruiter     
   Daily 51.1 41.7 47.0 57.9
   More than weekly 30.6 38.9 10.7 15.8
   Weekly 10.3 13.1 25.5 15.8
   Monthly 2.0 1.7 7.3 -
   Less than monthly 2.6 1.9 9.1 10.5
Months known recruiter     
   Mean 30.3 4.3 62.4 77.9
   Median(IQR) 10(4-28) 2(1-3) 36(12-72) 13(5-180)
Relationship with recruiter     
   Very close 30.3 11.2 28.4 26.3
   Somewhat close 55.4 70.3 49.3 57.9
   Not close 11.1 17.3 21.0 15.8
Reasons for enrollment     
   Compensation 35.4 59.6 20.9 31.6
   Friend convincing 40.6 44.2 44.3 47.4
   Interested in study 23.1 13.5 26.2 5.3
   Have free time 6.6 0.8 10.1 5.3
   Other - - 3.1 15.8
Number of labourers from your country aged > 15 in this village (perceived)     
   Mean 78.0 16.2 26.3 11.4
   Median(IQR) 40(15-100) 10(8-15) 15(7-30) 10(3-15)
Of those above, number known personally     
   Mean 41.4 11.0 17.7 10.5
   Median(IQR) 21(11-42) 10(7-14) 10(6-20) 8(3-10)
Of those above, number seen in past 30 days     
Total     
   Mean 30.9 11.4 13.7 8.7
   Median(IQR) 20(10-32) 10(7-14) 10(6-20) 7(3-10)
Male     
   Mean 16.3 7.0 8.6 5.7
   Median(IQR) 10(5-18) 6(4-9) 6(4-10) 5(3-6)
Female     
   Mean 16.0 4.7 6.6 4.4
   Median(IQR) 10(4-19) 4(2-5) 5(3-9) 4(2-5)
Number attempted to recruit     
   Mean 4.6 4.6 4.0 3.1
   Median(IQR) 3(3-3) 3(3-5) 3(3-3) 3(3-3)
  1. IQR: Interquartile range
  2. * Has lived in Thailand for 6 or more months; ** Has lived in Thailand for less than 6 months