Table 2 Study population characteristics at baseline in the longitudinal data analyses¹ (n = 638)

Participants within trials, n (%)

 Trial by Ayala et al.

170

(51.2)

173

(56.5)

 Trial by Vogel et al.

51

(15.4)

46

(15.0)

 Trial by Stuber et al.

111

(33.4)

87

(28.4)

Educational attainment,² n (%)

 Lower

228

(68.7)

204

(66.7)

 Higher

104

(31.3)

102

(33.3)

Sex, n (%)

 Females

251

(75.6)

236

(77.1)

 Males

81

(24.4)

70

(22.9)

Age, n (%)

 Younger adults (18–55 years)

217

(65.4)

229

(74.8)

 Older adults (> 55 years)

115

(34.6)

77

(25.2)

Age, mean (SD)

47.6

(13.9)

45.4

(13.1)

Number of persons purchased groceries for, median [IQR]

4.0

[3.0]

4.0

[3.0]

Percentage fruit and vegetable purchases of total purchases, median [IQR]

25.0

[19.3]

25.0

[22.6]

Z-score of diet quality³, mean (SD)

-0.0

(1.0)

-0.1

(1.0)