Table 3.
Network distances (km) to primary supermarkets by store type
| Seattle Obesity Study (SOS) | RECORD study | |||||
|---|---|---|---|---|---|---|
| Seattle total N=1340 |
Seattle city N = 671 |
Seattle suburb N = 669 |
Paris total N=7131 |
Paris city N=2044 |
Paris suburb N=5057 |
|
| Distance to store (in km)1 | ||||||
| Mean ± SD | 4.08 ± 3.43 | 3.63 ± 3.48 | 4.53 ± 3.32 | 2.37±5.50 | 1.65 ± 6.30 | 2.65 ± 5.12 |
| Median (IQR) | 3.08 (1.66, 5.52) | 2.60 (1.32, 4.60) | 3.64 (2.31, 5.95) | 1.02 (0.43, 2.48) | 0.44 (0.24, 0.91) | 1.41 (0.63,3.04) |
| Distance by store type (km, mean ± SD)1 | ||||||
| Low cost | 5.23 ± 3.58 | 7.49 ± 4.17 | 4.71 ± 3.22 | 1.96 ±4.26 | 0.69 ± 1.28 | 2.44 ± 4.85 |
| Medium cost | 3.45 ± 2.92 | 2.91 ± 2.60 | 4.19 ± 3.19 | 2.74 ± 6.10 | 2.28± 7.88 | 2.86 ± 5.38 |
| High cost | 4.36 ± 4.52 | 3.96 ± 4.21 | 8.47 ± 5.61 | 0.98 ±2.02 | 0.60 ± 0.59 | 1.32 ± 2.69 |
1
Note: 29 samples in the Paris dataset with a reported travel distance over 100km were removed from the above descriptive analysis.