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. 2021 May 17;12(5):1944–1956. doi: 10.1093/advances/nmab039

TABLE 4.

Pooled change in cardiometabolic outcomes as a result of healthy produce prescription programs1

Percent change Absolute change Certainty of evidence (GRADE)
Outcome Studies (n) Reference Participants (n) Estimate (95% CI) P 2 I2 (%) Estimate (95% CI) P 2 I2 (%)
Fruit and vegetable intake, servings/d3 5 (37, 40–43) 1039 22 (12, 32) <0.001 97 0.79 (0.23, 1.35) 0.004 96 LOW4,5 ⊕⊕⊝⊝
Fruit intake, servings/d 3 (38, 40, 42) 257 39 (12, 67) 0.005 90 0.59 (0.32, 0.87) <0.001 59 MODERATE6 ⊕⊕⊕⊝
Vegetable intake, serving/d 2 (40, 42) 178 29 (–8, 65) 0.124 98 0.53 (–0.04, 1.10) 0.068 87 VERY LOW7,8,9 ⊕⊝⊝⊝
SBP, mmHg 4 (26, 37, 38, 41) 328 –1.8 (–5.9, 2.3) 0.383 86 –2.39 (–7.77, 2.99) 0.383 85 VERY LOW10,11,12 ⊕⊝⊝⊝
DBP, mmHg 4 (26, 37, 38, 41) 328 0.0 (–1.2, 1.3) 0.966 15 0.02 (–0.95, 0.99) 0.964 13 LOW10,12 ⊕⊕⊝⊝
HbA1c, % 5 (26, 34, 38, 43, 44) 1064 –8.6 (–16.9, –0.35) 0.041 99 –0.81 (–1.56, –0.06) 0.035 92 VERY LOW10,13,14⊕⊝⊝⊝
LDL, mM 2 (37, 38) 214 –1.1 (–12.4, 10.3) 0.855 58 –0.03 (–0.33, 0.27) 0.856 50 LOW15,16⊕⊕⊝⊝
HDL, mM 2 (37, 38) 214 2.9 (–4.9, 10.8) 0.468 0 0.04 (–0.06, 0.14) 0.463 0 LOW15,16⊕⊕⊝⊝
TG, mM 2 (37, 38) 214 22.5 (–44.2, 89.2) 0.509 52 0.23 (–0.44, 0.90) 0.502 49 LOW15,16⊕⊕⊝⊝
BMI, kg/m2 3 (27, 41, 44) 215 –1.6 (–2.8, –0.3) 0.013 27 –0.61 (–1.06, –0.16) 0.008 6.4 LOW17,18 ⊕⊕⊝⊝
1

DBP, diastolic blood pressure; GRADE, Grades of Recommendation, Assessment, Development, and Evaluation Working Group; HbA1c, glycated hemoglobin; RCT, randomized controlled trial; SBP, systolic blood pressure; TG, triglycerides.

2

P value of Z-test for significance of pooled change and 95% CI.

3

Where possible, fruit and vegetable intake (in servings/d) reported separately within a study was converted to combined fruit and vegetable intake by methods described previously (83) and meta-analyzed using the method described in the footnote of Table 3.

4

Downgraded by 1 for risk of bias: ≥4 studies non-RCTs; ≥3 studies with >10% loss to follow-up (risk of selection bias and attrition bias).

5

Downgraded by 1 for inconsistency: significant unexplained heterogeneity.

6

Downgraded by 1 for risk of bias: ≥2 studies non-RCTs; ≥1 study with >10% loss to follow-up (risk of selection and attrition bias).

7

Downgraded by 1 for risk of bias: ≥2 studies non-RCTs; 1 study with >10% loss to follow-up (risk of selection bias and attrition bias).

8

Downgraded by 1 for inconsistency: significant unexplained heterogeneity.

9

Downgraded by 1 for imprecision: does not meet optimal information size criterion.

10

Downgraded by 1 for risk of bias: ≥2 studies non-RCTs; ≥2 studies with >10% loss to follow-up (risk of selection bias and attrition bias).

11

Downgraded by 1 for inconsistency: significant unexplained heterogeneity.

12

Downgraded by 1 for imprecision: does not meet optimal information size criterion.

13

Downgraded by 1 for inconsistency: significant unexplained heterogeneity.

14

Downgraded by 1 for imprecision: does not meet optimal information size criterion.

15

Downgraded by 1 for risk of bias: ≥1 study with >10% loss to follow-up (risk of attrition bias).

16

Downgraded by 1 for imprecision: does not meet optimal information size criterion.

17

Downgraded by 1 for risk of bias: ≥2 studies non-RCTs (risk of selection bias).

18

Downgraded by 1 for imprecision: does not meet optimal information size criterion.