Summary Statistics for Hospital Admissions, Ozone, and Covariates for Years 1993–2000
| Mean | Standard deviation | |
|---|---|---|
| A. Dependent variables (daily admissions) | ||
| Any respiratory illness | 0.097 | 0.333 |
| Age 0-5 | 0.043 | 0.216 |
| Age 6-14 | 0.018 | 0.135 |
| Age 15-64 | 0.129 | 0.376 |
| Age 65 + | 0.199 | 0.465 |
| Pneumonia | 0.037 | 0.199 |
| Bronchitis/asthma | 0.033 | 0.186 |
| Other respiratory illness | 0.027 | 0.167 |
| B. Independent variables (five-day average) | ||
| Eight-hour ozone (ppm) | 0.050 | 0.018 |
| Eight -hour carbon monoxide (PSI) | 16.60 | 9.04 |
| One-hour nitrogen dioxide (PSI) | 18.3 | 6.92 |
| Maximum temperature (°F) | 80.37 | 9.04 |
| Minimum temperature (°F) | 59.08 | 5.90 |
| Precipitation (hundreths of inches) | 1.02 | 4.63 |
| Resultant wind speed (mph) | 5.74 | 1.48 |
| Maximum relative humidity (percent) | 90.24 | 5.09 |
| Average cloud cover sunrise to sunset (percent) | 4.42 | 1.65 |
| Boat traffic (tons / 1000) | 514.49 | 55.58 |
| N | 1,927,187 | |