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Table 4 Multivariable analysis of the effects of ovarian age, month, year and method of capture on the wing length of female G. pallidipes (n = 80,219; r2 = 0.26) and G. m. morsitans (n = 7764; r2 = 0.24) captured in the field at Rekomitjie between January 1989 and December 1993

From: Wing length and host location in tsetse (Glossina spp.): implications for control using stationary baits

  G. pallidipes G. m. morsitans
Coefficient 95% CL Coefficient 95% CL
Lower Upper Lower Upper
Ovarian age
 1 -1.21 -1.88 -0.54*** -2.01 -3.88 -0.13*
 2 0.22 -0.44 0.88 -2.45 -4.37 -0.54*
 3 0.35 -0.33 1.04 -1.26 -3.26 0.74
 4 0.22 -0.43 0.87 0.94 -0.91 2.80
 5 0.05 -0.61 0.72 -1.72 -3.65 0.21
 6 -0.18 -0.89 0.52 -0.97 -3.09 1.14
 7 -0.22 -1.03 0.60 -0.61 -3.52 2.31
Year
 90 1.67 1.10 2.25*** 2.47 0.33 4.60*
 91 2.27 1.79 2.76*** 5.08 3.46 6.70***
 92 -2.85 -3.31 -2.40*** -2.27 -4.10 -0.43*
 93 11.73 11.28 12.18*** 8.84 6.99 10.69***
Month
 February 18.45 17.71 19.19*** 9.42 7.08 11.77***
 March 24.88 24.14 25.63*** 17.89 14.97 20.82***
 April 27.35 26.63 28.06*** 24.97 21.83 28.12***
 May 30.86 30.12 31.59*** 22.70 19.55 25.85***
 June 29.22 28.46 29.98*** 23.09 20.83 25.34***
 July 32.77 32.00 33.54*** 27.85 25.60 30.10***
 August 27.78 26.97 28.58*** 23.04 20.63 25.45***
 September 22.50 21.73 23.26*** 21.03 18.73 23.32***
 October 15.68 14.84 16.51*** 13.04 10.58 15.51***
 November 3.24 2.45 4.03*** -3.27 -5.86 -0.69*
 December -1.53 -2.29 -0.78*** -5.85 -8.25 -3.49***
Method
 VET -1.73 -2.21 -1.26*** -2.97 -4.23 -1.73***
 Constant 707.8 706.9 708.6 618.3 615.6 621.1
  1. *P < 0.05, ***P < 0.001 (Student’s t-test)
  2. Abbreviation: CL, 95% confidence interval limits