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Results of separate runs of the two-part model of mean medical expenditures for Former smokers using 1-year, 2-year and 5-year thresholds for years-since-quitting smoking in 2015 US dollars
| Years since quitting | Mean | 95% CI |
| 1 or fewer years | $5036 | 3604.4 to 6646.6 |
| More than 1 year | $5006 | 4588.8 to 5422.3 |
| 2 or fewer years | $5132 | 4035.0 to 6229.6 |
| More than 2 years | $4986 | 4543.6 to 5429.1 |
| 5 or fewer years | $4957 | 4182.8 to 5730.7 |
| More than 5 years | $5028 | 4551.1 to 5505.2 |
