First author (year) Sample (n) | Outcome measures | Outcomes | Intervention group | Comparison group | Control group | Group x time results (adjusted, if reported) | |||
---|---|---|---|---|---|---|---|---|---|
Baseline Mean (SD) | Follow-up Mean (SD) | Baseline Mean (SD) | Follow-up Mean (SD) | Baseline Mean (SD) | Follow-up Mean (SD) | ||||
Block (2009) [25] n = 770 | SAKG child questionnaire (four point scale) | Always willing to try new foods if… |  |  | NA | NA |  |  | NR |
Never tried it before (%) Cooked it (%) Grown it in the garden (%) | 26 32 26 | 39 51 39 | 35 39 35 | 23 34 23 | |||||
Gibbs (2013) [26] n = 764 (some differences)a | |||||||||
SAKG parent questionnaire | Child always willing to try new foods (%) | 27 | 33 | 24 | 27 | ||||
Gatto (2012) [29] n = 107 | Motivation for Healthy Behaving (17 items) | Preference for fruits Preference for vegetables | NR | Change values only reported | NA | NA | NR | Change values only reported | p = 0.9 p = 0.06 |
Combination of measures (13 items; seven point scale) | Fruit from the garden tastes better than fruit from the store (/7) Vegetables from the garden taste better than vegetables from the store (/7) | 4.9 (2.4) 4.4 (2.5) | 6.2 (1.4) 5.8 (1.8) |  |  | 4.8 (2.2) 4.2 (2.3) | 4.8 (2.2) 4.3 (2.2) | NS p < 0.05 | |
Jaenke (2012) n = 127 [15] | Food preference assessment tool | Overall willingness to taste (/6) Overall taste rating (/30) Taste rating carrot (/5) Taste rating pea (/5) Taste rating tomato (/5) Taste rating broccoli (/5) Taste rating capsicum (/5) Taste rating lettuce (/5) | 4.54 (1.50) 18.5 (7.4) 3.7 (1.6) 2.9 (1.8) 2.9 (2.3) 2.6 (1.8) 2.4 (2.1) 4.1 (1.5) | Between group mean differences only | 4.50 (1.94) 18.1 (9.0) 3.7 (1.6) 2.8 (1.8) 2.4 (2.3) 2.8 (2.0) 3.0 (2.1) 3.7 (1.9) | Between group mean differences only | 3.93 (2.04) 15.5 (8.8) 3.5 (1.8) 2.0 (1.9) 2.5 (2.4) 2.1 (2.1) 2.1 (2.2) 3.3 (1.9) | Between group mean differences only | p < 0.001 p < 0.001 p = 0.071 p < 0.001 p = 0.03 p < 0.001 p = 0.12 p = 0.02 |
Morgan (2010) [30] n = 127 (some differences)a | |||||||||
Reported in Morgan paper only: | Â | Â | Â | Â | Â | Â | Â | ||
Willingness to taste: Lettuce (proportion) Carrot (proportion) Capsicum (proportion) Broccoli (proportion) Tomato (proportion) Pea (proportion) | 0.94 0.89 0.60 0.71 0.60 0.69 | 0.97 0.92 0.74 0.93 0.76 0.77 | 0.83 0.89 0.77 0.74 0.56 0.74 | 0.85 0.88 0.64 0.61 0.48 0.76 | 0.77 0.82 0.51 0.58 0.60 0.63 | 0.61 0.70 0.35 0.36 0.40 0.41 | 0.24 0.14 0.04 0.01 <0.001 0.02 | ||
Would you eat this food as a snack? | Â | Â | Â | Â | Â | Â | Â | ||
Lettuce (proportion) Carrot (proportion) Capsicum (proportion) Broccoli (proportion) Tomato (proportion) Pea (proportion) | 0.60 0.67 0.22 0.06 0.46 0.21 | 0.68 0.60 0.43 0.40 0.48 0.61 | 0.54 0.64 0.26 0.18 0.48 0.24 | 0.69 0.60 0.29 0.18 0.32 0.32 | 0.39 0.63 0.23 0.19 0.42 0.25 | 0.30 0.61 0.29 0.06 0.34 0.11 | 0.15 0.89 0.39 <0.001 0.31 0.001 | ||
Meinen (2012) [31] n = 404 | Student survey (three point scale) | Willingness to try fruits and vegetables: If given a new kind of fruit at home (/3) If given a new kind of fruit at school (/3) If given a new kind of vegetable at home (/3) If given a new kind of vegetable at school (/3) Would you choose fruit as a snack? (/3) Would you choose vegetables as a snack? (/3) | 2.5 (0.60) 2.2 (0.72) 2.2 (0.70) 2.1 (0.73) 2.4 (0.68) 1.8 (0.74) | 2.6 (0.59) 2.3 (0.72) 2.3 (0.70) 2.1 (0.78) 2.5 (0.63) 2.0 (0.73) | NA | NA | 2.6 (0.58) 2.3 (0.69) 2.3 (0.69) 2.0 (0.71) 2.5 (0.66) 1.9 (0.78) | 2.5 (0.65) 2.2 (0.69) 2.2 (0.71) 2.0 (0.75) 2.5 (0.64) 2.0 (0.75) | NR |
 | Parent survey (10 items; four point scale) | Like/dislike of fruits and vegetables: |  |  |  |  |  |  |  |
Apples (/4) Watermelon (/4) Broccoli (/4) Tomatoes (/4) Spinach (/4) Swiss chard (/4) Zucchinis (/4) Cucumbers (/4) Green beans (/4) Peppers (/4) | 3.8 (0.45) 3.7 (0.58) 2.8 (1.05) 2.3 (1.12) 2.2 (0.99) 1.6 (0.82) 2.3 (0.99) 3.0 (0.99) 3.3 (0.89) 2.4 (1.13) | 3.7 (0.57) 3.6 (0.68) 2.9 (1.06) 2.5 (1.15) 2.4 (1.14) 2.0 (0.95) 2.4 (0.95) 3.0 (1.05) 3.4 (0.90) 2.6 (1.12) | Â | Â | 3.8 (0.46) 3.6 (0.74) 2.9 (1.02) 2.4 (1.13) 2.2 (1.06) 1.7 (0.96) 2.3 (1.11) 2.9 (1.13) 3.3 (0.95) 2.3 (1.17) | 3.8 (0.52) 3.6 (0.75) 2.8 (1.07) 2.5 (1.16) 2.1 (1.02) 1.7 (0.78) 2.3 (1.01) 3.1 (1.01) 3.4 (0.85) 2.3 (1.09) | Â | ||
Morris (2001) [32] n = 97 | Student questionnaire (six items; five point scale) | Mean total tasting score indicating willingness to taste (/5) Vegetables tasted: spinach, carrots, peas, broccoli, zucchini and red bell pepper. | 4.07 (0.31)a | 4.83 (0.23)a | NA | NA | 3.90 (0.30)a | 3.90 (0.29)a | p < 0.005 |
Morris (2002) [33] (1) n = 213 | Vegetable preference survey (six items; five point scale) | Vegetable preference score at post-test: | NR | Post-test: | NR | Post-test: | NR | Post-test: |  |
Broccoli (/5) Carrots (/5) Jicama (/5) Snow peas (/5) Spinach (/5) Zucchini (/5) |  | 3.8 (0.1)a 4.7 (0.1)a 3.9 (0.2)a 3.8 (0.2)a 3.0 (0.2)a 4.0 (0.2)a |  | 3.8 (0.1)a 4.7 (0.1)a 3.8 (0.2)a 3.1 (0.2)a 3.2 (0.2)a 3.2 (0.1)a |  | 3.2 (0.2)a 4.4 (0.1)a 3.6 (0.2)a 2.9 (0.2)a 3.1 (0.2)a 3.1 (0.2)a | F = 4.840; p < 0.01 F = 5.768; p < 0.005 NR F = 7.657; p < 0.005 NR F = 10.012; p < 0.0005 | ||
Vegetable preference score at 6Â m follow up: | Â | Follow up: | Â | Follow up: | Â | Follow up: | Â | ||
Broccoli (/5) Carrots (/5) Jicama (/5) Snow peas (/5) Spinach (/5) Zucchini (/5) | Â | 4.0 (0.1)a 4.6 (0.1)a 3.8 (0.2)a 3.7 (0.2)a 3.4 (0.1)a 4.0 (0.1)a | Â | 3.7 (0.1)a 4.7 (0.1)a 3.4 (0.2)a 3.0 (0.2)a 3.2 (0.1)a 3.4 (0.1)a | Â | 3.5 (0.2)a 4.4 (0.1)a 3.2 (0.2)a 3.0 (0.2)a 3.3 (0.2)a 3.2 (0.2)a | NR NR NR NR NR NR | ||
Morris (2002) [34] (2) n = 215 | Vegetable preference survey (six items; yes/no/don’t know) | Vegetable preferences at post-test: Do you eat this food at home? (/6) Would you ask your family to buy this food? (/6) Would you eat this food as a snack? (/6) | NR | Post-test: 3.3 (0.1)a 2.9 (0.2)a 2.4 (0.2)a | NR | Post-test: 3.1 (0.1)a 2.6 (0.2)a 2.2 (0.2)a | NR | Post-test: 2.7 (0.2)a 1.9 (0.2)a 1.6 (0.2)a | F = 4.165; p < 0.05 F = 7.181; p < 0.005 F = 5.239; p < 0.01 |
Vegetable preferences at 6Â m follow up: | Â | Follow up: | Â | Follow up: | Â | Follow up: | Â | ||
Do you eat this food at home? (/6) Would you ask your family to buy this food? (/6) Would you eat this food as a snack? (/6) |  | 3.2 (0.1)a 2.6 (0.2)a 2.4 (0.2)a |  | 3.1 (0.2)a 2.5 (0.2)a 1.9 (0.2)a |  | 2.8 (0.2)a 2.4 (0.2)a 1.5 (0.2)a | NR NR F = 6.152; p < 0.005 | ||
O’Brien (2006) [35] n = 38 | FV preference assessment (four point scale) | Total fruit preference (/8) Total vegetable preference (/16) Fruits and vegetables tasted unknown | 7.18 (0.31)a 10.94 (0.92)a | 7.06 (0.34)a 11.24 (0.92)a | NA | NA | 6.05 (0.33)a 8.81 (0.91)a | 6.05 (0.33)a 9.05 (0.97)a | NR |
Parmer (2009) [37] n = 115 | FV preference questionnaire (six items; five point scale) | Willingness to taste (/6) Ratings of tasted fruits and vegetables (/5) Fruits and vegetables tasted: carrots, broccoli, spinach, zucchini, cabbage and blueberries. | 4.82 (1.6) 3.45 (0.9) | 5.50 (1.0) 4.38 (0.5) | 5.11 (1.1) 3.85 (0.8) | 5.33 (1.2) 4.15 (0.6) | 3.84 (2.1) 3.99 (0.7) | 4.23 (2.0) 3.82 (0.5) | F = 0.878; p = 0.42 F = 14.45; p < 0.001 |
Parmer (2007) [36] n = 115 | |||||||||
FV preference survey (15 items; three point scale) | Fruit preference (/3) Vegetable preference (/3) | 2.59 (0.4) 2.08 (0.5) | 2.60 (0.3) 2.03 (0.5) | 2.70 (0.3) 2.20 (0.6) | 2.73 (0.3) 2.14 (0.6) | 2.59 (0.4) 2.10 (0.5) | 2.57 (0.3) 1.98 (0.5) | NR NR | |
Ratcliffe (2011) [38] n = 320 | Taste test (five items; five point scale) | Willingness to taste vegetables (/5) Preference for vegetables (/5) Vegetables tasted: carrots, string beans, snow peas, broccoli and Swiss chard. | NR | Change values only reported | NA | NA | NR | Change values only reported | 0.286 0.279 |
Garden Vegetables Frequency Questionnaire (22 items plus two added) | Preference for vegetables: | Â | |||||||
all (24 items) grown in school garden (11 items) not grown in school garden (13 items) | 0.029 0.017 0.23 | ||||||||
Willingness to taste vegetables: | Â | ||||||||
all (24 items) grown in school garden (11 items) not grown in school garden (13 items) | <0.001 <0.001 0.025 |