Table 1. Demographics of 555 million National Hospital Ambulatory Medical Care Survey (NHAMCS) mental health and medical visits (2009-2015).
a weighted visits; b includes imputed data; SD = standard deviation; IQR = interquartile range (75th percentile-25th percentile)
| Mental Health | Medical | |||
| N in 1000’s a | Percent | N in 1000’s a | Percent | |
| Total Visits | 28,945 | 5 | 526,246 | 95 |
| Age, years | ||||
| Mean (SD) | 37.9 (14.3) | 38.3 (13.2) | ||
| 18-29 | 9,337 | 32 | 173,067 | 33 |
| 30-39 | 6,562 | 23 | 114,933 | 22 |
| 40-49 | 6,566 | 23 | 104,693 | 20 |
| 50-59 | 4,959 | 17 | 97,680 | 19 |
| 60-64 | 1,521 | 5 | 35,874 | 7 |
| Sex | ||||
| Female | 12,924 | 45 | 304,803 | 58 |
| Male | 16,020 | 55 | 221,443 | 42 |
| Race/Ethnicityb | ||||
| White, Non-Hispanic | 18,811 | 65 | 311,125 | 59 |
| Black, Non-Hispanic | 5,481 | 19 | 127,911 | 24 |
| Hispanic | 3,839 | 13 | 72,090 | 14 |
| Other, Non-Hispanic | 813 | 3 | 15,120 | 3 |
| Insurance | ||||
| Private | 7,128 | 25 | 183,472 | 35 |
| Medicare | 3,345 | 12 | 46,658 | 9 |
| Medicaid | 8,242 | 28 | 126,792 | 24 |
| Self-pay | 5,991 | 21 | 96,954 | 18 |
| Other | 4,238 | 15 | 72,370 | 14 |
| Homeless | 1,495 | 5 | 3,087 | 1 |
| Region | ||||
| Northeast | 6,657 | 23 | 91,909 | 17 |
| Midwest | 6,984 | 24 | 124,603 | 24 |
| South | 8,357 | 29 | 204,464 | 39 |
| West | 6,947 | 24 | 105,270 | 20 |
| Disposition | ||||
| Admit | 4,582 | 16 | 46,092 | 9 |
| Transfer | 3,604 | 12 | 8,268 | 2 |
| Discharge | 20,759 | 72 | 471,887 | 90 |
| Length of Stay, hours | ||||
| Median (IQR) | 3.7 (4.7) | 2.6 (2.7) | ||
| > 6 hours | 9,414 | 33 | 79,824 | 15 |
| > 12 hours | 4,183 | 14 | 35,630 | 7 |