Table 7 Characteristics of articles associated with the food prices domain (n = 30)

Jurisdiction level

National

4

13

[73, 86, 93, 252]

Provincial/territorial

8

27

[52, 57, 70, 90,91,92, 253, 254]

Regional

10

33

[50, 51, 53, 54, 59, 71, 72, 255,256,257]

Municipal^a

8

27

[49, 55, 56, 58, 60,61,62, 69]

Setting

Grocery retailers

24

80

[49,50,51,52,53,54,55,56,57,58,59, 62, 70, 71, 73, 86, 90,91,92,93, 252,253,254,255]

Convenience stores

6

20

[53, 54, 58, 90,91,92]

Restaurants

3

10

[53, 58, 60]

Other (e.g., drugstores, natural stores, farmer's market, discount stores)

11

37

[51, 59, 61, 62, 69, 72, 90,91,92, 256, 257]

Methods

Data collection methods

In-store (observational audit, survey or census)

25

83

[49,50,51,52,53,54,55,56,57,58,59,60,61,62, 69, 71, 73, 86, 90, 93, 252,253,254, 256]

Online audit

3

10

[60, 252, 255]

Commercial database

3

10

[70, 91, 92]

Other (ethnographic methods, publicly available information such as reports)

3

10

[72, 255, 257]

Outcomes

Food prices of specific foods or food categories

23

77

[49, 52, 53, 55,56,57,58,59,60,61,62, 69,70,71,72,73, 90,91,92,93, 252, 256, 257]

Food pairs comparison^b

9

30

[50, 51, 53,54,55, 58, 61, 62, 86]

Diet cost

4

13

[53, 71, 252, 255]

Diet affordability

2

7

[253, 254]

Other (e.g., frequency of price promotion, value of a food hamper)

4

13

[52, 91, 92, 256]

Price metric category used (among publications reporting on price of specific foods or food groups; n = 18)

Per unit of weight (price per kilogram, price per 100 g and price per pound)

10

56

[49, 50, 56, 57, 71,72,73, 86, 256, 257]

Per unit or piece

6

33

[49, 56, 61, 70, 93, 256]

Per serving

5

28

[50, 56, 70, 91, 92]

Per unit of energy (price per 100 kilocalories or price per 1000 kilocalories)

2

11

[50, 71]

Other or undefined

2

11

[51, 69]