Table 1.
Descriptive statistics for mean and range (in parentheses) of daily meteorological and mortality variables during the summertime in 1998-2006 for four US study cities.
| Variables' Description | Variable Name | Unit | City | |||
|---|---|---|---|---|---|---|
|
| ||||||
| Chicago | Detroit | Philadelphia | Phoenix | |||
| Meteorological variables | ||||||
| Minimum temperature | minTMP | °C | 15.1 (0.6, 27.2) | 15.1 (0, 27.2) | 17.9 (4.4, 27.8) | 26.1 (11.1, 36.1) |
| Mean temperature | meTMP | °C | 20.2 (3.9, 32.2) | 20.1 (4.4, 31.7) | 22.5 (9.4, 32.5) | 32.3 (16.7, 41.1) |
| Maximum temperature | maxTMP | °C | 25.3 (6.1, 38.9) | 25.1 (7.8, 37.2) | 27.1 (12.2, 37.8) | 38.5 (20.6, 47.2) |
| Minimum dew point | minDWP | °C | 10.8 (-9.4, 22.8) | 10.9 (-6.7, 22.8) | 12.8 (-7.2, 23.3) | 4.4 (-15.6, 20.0) |
| Mean dew point | meDWP | °C | 13.7 (-4.7, 24.2) | 13.8 (-2.2, 23.9) | 15.5 (-1.9, 24.7) | 8.2 (-7.2, 21.9) |
| Maximum dew point | maxDWP | °C | 16.6 (-2.2, 27.8) | 16.7 (0.6, 27.8) | 18.3 (0.6, 27.2) | 12.1 (-3.3, 27.2) |
| Minimum apparent temperature | minAT | °C | 15.2 (-2.1, 34.7) | 15.2 (-2.6, 33.1) | 18.9 (1.8, 32.9) | 25.6 (9.1, 35.7) |
| Mean apparent temperature | meAT | °C | 20.7 (1.5, 39.0) | 20.6 (1.8, 38) | 23.7 (6.8, 37.4) | 31.5 (14.4, 39.9) |
| Maximum apparent temperature | maxAT | °C | 26.2 (3.8, 43.4) | 26.0 (5.2, 42.9) | 28.5 (10.1, 45.3) | 37.3 (18.0, 45.9) |
| Minimum barometric pressure | minSTP | 102 Pa | 988.9 (969.9, 1003.1) | 989.7 (965.2, 1002.7) | 1011.9 (989.4, 1029.9) | 968.2 (959.9, 975.6) |
| Mean barometric pressure | meSTP | 102 Pa | 990.9 (972.4, 1003.9) | 991.8 (968.9, 1004.8) | 1014.0 (997.0, 1031.0) | 970.5 (962.7, 977.2) |
| Maximum barometric pressure | maxSTP | 102 Pa | 992.9 (974.8, 1006.0) | 993.8 (972.5, 1007.1) | 1016.0 (999.5, 1033.4) | 972.8 (965.1, 979.6) |
| Minimum absolute humidity | minAH | 10-3 kg m-3 | 10.1 (2.3, 20.3) | 10.2 (2.8, 19.9) | 11.4 (2.6, 21.2) | 6.7 (1.3, 16.8) |
| Mean absolute humidity | meAH | 10-3 kg m-3 | 12.4 (3.4, 22.4) | 12.4 (4.0, 21.8) | 13.8 (4.0, 23.0) | 8.9 (2.7, 19.7) |
| Maximum absolute humidity | maxAH | 10-3 kg m-3 | 14.6 (4.0, 27.1) | 14.6 (4.8, 27.0) | 16.1 (4.9, 26.6) | 11.1 (3.5, 26.4) |
| Cause-specific mortality variables | ||||||
| All-cause | tot | Counts | 144 (101, 195) | 86 (54, 122) | 112 (82, 151) | 54 (25, 82) |
| Cardiovascular | cvd | Counts | 45 (22, 86) | 30 (11, 53) | 33 (14, 53) | 15 (6, 30) |
| Stroke | stroke | Counts | 8 (1, 21) | 4 (0, 14) | 7 (0, 21) | 3 (0, 10) |
| Myocardial infarction | mi | Counts | 12 (1, 30) | 6 (0, 16) | 8 (0, 20) | 3 (0, 11) |
| Congestive heart failure | chf | Counts | 3 (0, 11) | 2 (0, 9) | 3 (0, 9) | 0 (0, 4) |
| Pneumonia | pneum | Counts | 1 (0, 12) | 0 (0, 7) | 0 (0, 8) | 1 (0, 7) |
| Chronic obstructive pulmonary disease | copd | Counts | 1 (0, 12) | 0 (0, 7) | 1 (0, 10) | 0 (0, 7) |
| Respiratory disease | resp | Counts | 12 (3, 25) | 7 (0, 17) | 10 (0, 21) | 5 (0, 15) |