Table 1.
Distribution of food outlets in urban census tract areas in Mexico.
| Food outlet/area | Mean count (SD) | Min count | Max count | Mean density (SD) | Median density | Min density | Max density | p25 | p50 | p75 | IQR | Number of CTA with no food outlets |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Convenience stores | 21.4 (14.0) | 0 | 105 | 50.00 (36.9) | 43.28 (36.85) | 0 | 438 | 36.85 | 43.28 | 67.94 | 45.24 | 119 |
| Fast-food outlets | 2.0 (2.4) | 0 | 30 | 4.85 (6.4) | 2.82 (6.41) | 0 | 71 | 0 | 2.82 | 7.04 | 7.04 | 7,704 |
| Restaurants | 9.9 (12.4) | 0 | 111 | 23.22 (29.3) | 14.09 (29.29) | 0 | 262 | 4.13 | 14.09 | 32.92 | 28.79 | 2,715 |
| Supermarkets | 0.2 (0.5) | 0 | 11 | 0.35 (1.2) | 0.00 (1.16) | 0 | 9 | 0 | 0 | 0 | 0 | 21,209 |
| Fruit and vegetable stores | 2.4 (9.3) | 0 | 199 | 5.90 (22.7) | 1.63 (22.74) | 0 | 547 | 0 | 1.63 | 5.90 | 5.96 | 10,145 |
| CTA geometric area (km2)a | 0.5 (0.6) | 0.0002 | 36 | NA | NA | NA | NA | NA | NA | NA | NA | NA |
Min: minimum count or density of food outlets per census tract area, Max: maximum count or density of food outlets per census tract area, NA: not applicable because it is a geographic area.
Count of food outlets is per census tract area (CTA) in km2. Density units are food outlet count in urban CTAs where the National Health and Nutrition Survey in Mexico (2012 ENSANUT) participants live.
SD standarad deviation, p25 25th percentile, p50 50th percentile, p75 75th percentile, IQR Interquartile range = p75 − p25
aCTA: Census tract area. Total number of urban CTAs = 55,427.