Table 1.
Characteristics of study sample (NAMCS Adult Visits 2012–2015)
| Characteristic | Non-Expansion | Expansion | P Value* | ||
|---|---|---|---|---|---|
| States (#) | 5 | 8 | |||
| State Population | 56,883,413 | 86,168,864 | |||
| Pre-Expansion | Post-Expansion | Pre-Expansion | Post-Expansion | ||
| Observations (Unweighted Adult Visits) | 16,304 | 11,370 | 24,210 | 19,315 | |
| Weighted Adult Visits | 363,304,730 | 365,396,561 | 555,332,020 | 610,880,554 | |
| Mean (SD) age (yr) | 56.1 (14.9) | 55.9 (12.2) | 54.2 (14.5) | 56.8 (12.2) | 0.047 |
| Female Sex (%) | 61 | 62 | 58 | 59 | 0.916 |
| Metropolitan Statistical Area (%) | 93 | 95 | 97 | 97 | 0.302 |
| Chronic Conditions (%) | 0.242 | ||||
| 0 | 33 | 29 | 37 | 29 | |
| 1 | 27 | 27 | 26 | 27 | |
| 2+ | 40 | 44 | 36 | 44 | |
| Race/Ethnicity (%) | 0.302 | ||||
| Non-Hispanic White | 68 | 65 | 70 | 63 | |
| Non-Hispanic Black | 12 | 14 | 7 | 9 | |
| Hispanic | 17 | 17 | 16 | 16 | |
| Non-Hispanic Other | 3 | 4 | 7 | 12 | |
*The p-value of the interaction term of a DinD comparison