Table 1.
Availability of iodised salt, according to supermarket chain, in a survey of supermarket stores in Southern England, Wales and Northern Ireland between June and August 2009. Market-share data from the time of the survey were used to calculate weighted availability
| Supermarket | Number of | Market share | Number of stores selling iodised salt (%) | Weighted | |
|---|---|---|---|---|---|
| chain | stores visited | (%)( 15 ) | n | % | availability (%) |
| Tesco | 16* | 31·0 | 0 | 0·0 | 0·0 |
| Asda | 15 | 17·2 | 0 | 0·0 | 0·0 |
| Sainsbury's | 16* | 15·9 | 6 | 37·5 | 6·0 |
| Morrisons | 15 | 11·4 | 13 | 86·7 | 9·9 |
| Waitrose | 15 | 3·9 | 13 | 86·7 | 3·4 |
| Lidl† | N/A† | 2·3 | N/A | 100·0 | 2·3 |
| Total | 77‡ | 81·7§ | 32‡ | 41·6 | 21·5§ |
N/A, not applicable.
*The only supermarket chains that operated in Northern Ireland.
†Data collected from customer services information, not shelf-survey data.
‡Calculation based on data collected during the shelf survey.
§Calculation based on shelf-survey data and includes data from the Lidl supermarket chain.