Table 4 Post vitamin A and anaemia status of participants anaemic before the intervention study
From: Effect of green leafy vegetables powder on anaemia and vitamin-A status of Ghanaian school children
Factor | Treatment | |||
|---|---|---|---|---|
|  | Control (n = 19) | CGLVP (n-22) | Diffa | P-value* |
|  | n (Mean ± SD) | n (Mean ± SD) |  |  |
Serum retinol concentration (μg/dl) | ||||
 Baseline | 19 (16.63 ± 7.59) | 22 (14.39 ± 5.40) | −2.24 ± 1.19 | 0.457 |
 End-line | 18 (23.78 ± 5.23) | 13 (27.46 ± 7.28) | 3.68 ± 2.05 | 0.089 |
 Difference | 7.15 ± 2.36 | 13.07 ± 1.88 | 5.92 ± 0.48a | 0.047 |
 P-value1 | 0.001 | 0.0001 | – | – |
 Effectiveness (%) | 43.0 | 90.8 | 47.8 | – |
Prevalence of low vitamin A (serum retinol conc. < 20 μg/dl) (%) | ||||
 Baseline | 64.3 | 84.2 | 19.9 | 0.049 |
 End-line | 23.1 | 21.1 | −2.0 | 0.892 |
 Difference | −41.2 | −63.1 | −21.9a | 0.041 |
 Effectiveness (%) | −64.1 | −74.9 | −10.8 | – |
Haemoglobin concentration (g/l) | ||||
 Baseline | 19 (106.6 ± 5.1) | 22 (104.9 ± 8.2) | −1.7 ± 3.1 | 0.450 |
 End-line | 14 (105.7 ± 7.5) | 12 (113.6 ± 13.6) | 7.9 ± 6.1 | 0.046 |
 Difference | −0.9 ± 2.4 | 8.7 ± 5.4 | 9.6 ± 3.0a | 0.034 |
 P-value1 | 0.489 | 0.011 | – | – |
 Effectiveness (%) | −0.8 | 8.3 | 9.1 | – |
Prevalence of anaemia (Hb < 115 g/l) (%), N = 41 | ||||
 Baseline | 19 (46.3) | 22 (53.7) | 7.4 | .062 |
 End-line | 14 (34.1) | 12 (29.3) | −4.8 | 0.081 |
 Difference | −12.2 | −24.4 | − 12.2a | 0.042 |
 Effectiveness (%) | −26.3 | −45.3 | −19.0 | – |