Classification bias in commercial business lists for retail food stores in the U.S.

Table 2 Inter-rater reliability of measures for collecting retailer characteristics

Measure	Statistics	Reliability	Proportional agreement
Number of cash registers	Intra Class Correlation	0.87	N/A
Does the store sell/have fresh milk	Simple Kappa	0.94†	0.94
Does the store sell/have fresh meats	Simple Kappa	0.93††	0.96
Does the store have a fresh produce section	Simple Kappa	0.97§	0.99
Number of different types of fresh fruits and vegetables	Intra Class Correlation	0.91‡	N/A
Does the store have a pharmacy	Simple Kappa	1.00	0.97
Does the store have a bank	Simple Kappa	0.92	0.89
Does the storehave a bakery	Simple Kappa	0.95	0.77
Does the storehave a deli	Simple Kappa	0.89	0.96
Does the storehave a butcher or section for unpackaged, fresh meat	Simple Kappa	0.75	0.94

†This is the average reliability for the availability of the four different milk types.
†† This is the average reliability for the availability of regular ground beef and lean ground beef.
‡ This is the average reliability for the availability of eight different fresh fruit and vegetable items.
§ This is the average reliability for count of fresh fruits and count of fresh vegetables.

ISSN: 1479-5868