Table 2 Categorized scores and mean difference of knowledge of general nutrition and micronutrients at pre-and post-intervention
From: Evidence-based strategy for prevention of hidden hunger among adolescents in a suburb of Nigeria
Intervention | No of Nutrition facts tested | Very good knowledge n (%) | Good knowledge n (%) | Poor knowledge n (%) | Mean ± SD | aMean difference | P-value |
|---|---|---|---|---|---|---|---|
General nutrition | |||||||
Pre-intervention | 11 | 281 (32.34) | 422 (48.56) | 166 (19.10) | 39.61 ± 13.32 | −26.16 | < 0.001*** |
Post-intervention | 538 (69.33) | 196 (25.26) | 42 (5.41) | 65.77 ± 14.01 | |||
Main nutrients in common foods | |||||||
Pre-intervention | 34 | 368 (42.35) | 309 (35.56) | 192 (22.09) | 66.87 ± 18.97 | −15.39 | < 0.001*** |
Post-intervention | 511 (65.85) | 187 (24.10) | 78 (10.05) | 82.26 ± 11.45 | |||
Vitamin A: functions and deficiencies | |||||||
Pre-intervention | 7 | 178 (20.48) | 184 (21.18) | 507 (58.34) | 32.84 ± 15.81 | −16.64 | 0.134 |
Post-intervention | 361 (46.52) | 296 (38.14) | 119 (15.34) | 49.48 ± 15.78 | |||
Vitamin C: functions and deficiencies | |||||||
Pre-intervention | 5 | 102 (11.74) | 211 (24.28) | 556 (63.98) | 23.59 ± 15.98 | −25.22 | 0.039* |
Post-intervention | 424 (54.64) | 206 (26.55) | 146 (18.81) | 48.81 ± 16.36 | |||
Folic acid: functions and deficiencies | |||||||
Pre-intervention | 5 | 90 (10.36) | 114 (13.12) | 665 (76.52) | 6.90 ± 4.88 | −33.51 | < 0.001*** |
Post-intervention | 246 (31.70) | 358 (46.13) | 172 (22.17) | 40.41 ± 9.96 | |||
Iron: functions and deficiencies | |||||||
Pre-intervention | 5 | 100 (11.51) | 128 (14.73) | 641 (73.76) | 28.12 ± 14.75 | −23.93 | 0.035* |
Post-intervention | 306 (39.43) | 214 (27.58) | 256 (32.99) | 52.05 ± 14.01 | |||
Calcium: functions and deficiencies | |||||||
Pre-intervention | 6 | 112 (12.89) | 209 (24.05) | 548 (70.62) | 17.56 ± 13.15 | −24.34 | 0.049* |
Post-intervention | 291 (37.50) | 322 (41.49) | 163 (21.01) | 41.90 ± 18.93 | |||
Zinc: functions and deficiencies | |||||||
Pre-intervention | 5 | 63 (7.25) | 162 (18.64) | 644 (74.11) | 7.71 ± 9.30 | −18.76 | 0.048* |
Post-intervention | 188 (24.23) | 314 (40.46) | 274 (35.31) | 26.46 ± 15.37 | |||