Table 2.

Bivariate association between chromosomal forms and climate and environmental parameters arising from multinomial regression model.

Parameters	Savanna OR (95% CI)	Bamako OR (95% CI)	Hybrids OR (95% CI)	p-value (AIC)
Agro-ecological zones (AEZ)
Guinea savanna	1.00	1.00	1.00	< 0.001
Sudan savanna	0.91 (0.84–0.98)	0.87 (0.80–0.94)	1.42 (1.23–1.63)
Sahel	0.30 (0.26–0.33)	1.03 (0.94–1.12)	0.73 (0.61–0.88)
Distance to water bodies
< 4 km	1.00	1.00	1.00	< 0.001
4 – 10 km	0.59 (0.55–0.63)	1.10 (1.03–1.18)	0.39 (0.34–0.44)
>10 – 20 km	0.95 (0.87–1.05	0.80 (0.72–0.89)	0.76 (0.65–0.89)
> 20 km	0.32 (0.25–0.42)	0.22 (0.15–0.30)	0.32 (0.21–0.49)
Land use
Savanna	1.00	1.00	1.00	< 0.001
Crop/Grass/Mosaic land	0.34 (0.31–0.37)	1.20 (1.12–1.29)	0.60 (0.52–0.69)
Others	0.09 (0.07–0.13)	0.10 (0.07–0.14)	0.35 (0.25–0.49)
Suitability to transmission
Not suitable	1.00	1.00	1.00	< 0.001
Suitable	4.44 (4.14–4.76)	1.67 (1.57–1.78)	2.90 (2.60–3.24)
Rainfall
Measure_1	1.06 (1.03–1.10)	1.00 (0.96–1.03)	1.23 (1.18–1.29)	<0.001 (58461.76)
Measure_2	1.60 (1.55–1.65)	0.99 (0.96–1.03)	1.31 (1.24–1.37)	<0.001 (57481.14)
Measure_3	1.32 (1.28–1.36)	0.99 (0.96–1.03)	1.29 (1.23–1.35)	<0.001 (58134.34)
Measure_4	1.87 (1.81–1.93)	1.07 (1.04–1.11)	1.51 (1.44–1.59)	<0.001 (56806.59)
NDVI
Measure_1	2.09 (2.02–2.17)	1.13 (1.09–1.16)	1.71 (1.62–1.81)	<0.001 (56443.11)
Measure_2	2.69 (2.59–2.79)	1.24 (1.20–1.28)	1.73 (1.63–1.83)	<0.001 (55413.54)
Measure_3	2.45 (2.36–2.54)	1.18 (1.15–1.22)	1.75 (1.65–1.85)	<0.001 (55830.97)
Measure_4	2.81 (2.70–2.92)	1.19 (1.15–1.23)	1.80 (1.70–1.91)	<0.001 (55171.33)
Temperature
Mean minimum	0.995(0.984–0.987)	0.995(0.994–0.996)	0.992(0.990–0.994)	<0.001
Mean maximum	0.981(0.980–0.983)	0.993(0.992–0.994)	0.985(0.984–0.987)	<0.001
SWS	28.79 (23.59–35.14)	2.15 (1.67–2.77)	7.57(5.39–10.63)	<0.001

Odds ratios are relative to Mopti chromosomal form.