Table 2 Descriptive statistics
Variable | Mean (std. deviation) | U test | p-value | |
|---|---|---|---|---|
Ghana (n = 120) | Zambia (n = 120) | |||
Socioeconomic indicators | Â | Â | ||
 Household head age (years) | 46.44 (15.96) | 44.68 (14.42) | 6812.00 | 0.470 |
 Household size (No) | 9.00 (4.00) | 5.00 (2.00) | 2233.50 | 0.000** |
 Household head education (years) | 3.15 (5.06) | 10.02 (4.00) | 2584.00 | 0.000** |
 Access to credit (No/Bank account) | 0.4 (0.74) | 0.71 (1.07) | 5985.00 | 0.008** |
 Total land size (Ha) | 1.51 (10.31) | 4.29 (2.97) | 2309.50 | 0.000** |
 Annual income (Agri and non-agricultural US$) | 1520.03 (1932.20) | 1801.63 (4809.15) | 7005.00 | 0.717 |
 Total livestock (No) | 24.74 (27.67) | 84.21 (386.03) | 5806.50 | 0.010* |
Multiple communication indicators | Â | Â | Â | |
 Owning of cell phones (No/HH) | 2.51 (1.71) | 1.95 (1.52) | 5893.50 | 0.012* |
 Owning of radios (No/HH) | 0.87 (0.90) | 0.82 (0.61) | 7065.00 | 0.776 |
 Owning of televisions (No/HH) | 0.68 (0.80) | 0.62 (0.66) | 7058.50 | 0.771 |
 Frequency of meetings with an officer | 0.25 (0.58) | 0.21 (0.43) | 7062.00 | 0.708 |
 Frequency of farmer demand for services | 1.10 (0.81) | 1.13 (0.64) | 6773.00 | 0.369 |
Perceived returns indicators | ||||
 Perceived impact on productivity | 1.67 (0.58) | 1.57 (0.67) | 6724.50 | 0.269 |
 Perceived impact on the adoption rate | 1.38 (0.69) | 1.37 (0.73) | 7132.50 | 0.890 |
 Perceived impact on food safety and nutrition | 0.68 (0.76) | 1.28 (0.79) | 4375.00 | 0.000** |