Table 2. Latitude and average of monthly meteorological variables per season by study site, September 2011 to October 2012.
| Site | Latitude (°) | Season | N* | Mean (SD) | |||
|---|---|---|---|---|---|---|---|
| MRSA | VRE | Mean temperature (°F) | Total precipitation (Inches) | Relative humidity (%) | |||
| University of Maryland, Baltimore, MD | 39.29 | Winter | 149 | 150 | 42.87 (2.36) | 2.13 (0.72) | 64.00 (4.36) |
| Spring | 267 | 266 | 61.33 (8.55) | 2.00 (0.71) | 62.33 (8.62) | ||
| Summer | 231 | 228 | 79.95 (3.83) | 3.64 (1.39) | 66.00 (6.00) | ||
| Fall | 329 | 329 | 63.09 (8.40) | 4.54 (2.55) | 74.40 (5.18) | ||
| Barnes Jewish, St. Louis, MO | 38.64 | Winter | 108 | 108 | 39.83 (1.97) | 2.51 (0.83) | 64.67 (3.79) |
| Spring | 186 | 186 | 64.27 (7.28) | 3.93 (2.95) | 57.33 (3.79) | ||
| Summer | 192 | 192 | 80.93 (5.18) | 2.32 (1.98) | 50.33 (3.21) | ||
| Fall | 228 | 229 | 60.41 (7.42) | 3.47 (1.14) | 62.20 (3.35) | ||
| Boston Medical Center, Boston, MA | 42.34 | Winter | 123 | 123 | 37.23 (2.95) | 1.81 (1.09) | 59.67 (5.13) |
| Spring | 162 | 162 | 53.33 (6.85) | 1.47 (0.65) | 62.67 (12.01) | ||
| Summer | 199 | 199 | 72.27 (4.83) | 2.49 (1.24) | 67.67 (2.31) | ||
| Fall | 223 | 221 | 59.32 (6.79) | 2.71 (1.25) | 70.40 (4.72) | ||
| Brigham & Women’s Hospital, Boston, MA | 42.34 | Winter | 228 | 227 | 37.23 (2.95) | 1.81 (1.09) | 59.67 (5.13) |
| Spring | 381 | 376 | 53.33 (6.85) | 1.47 (0.65) | 62.67 (12.01) | ||
| Summer | 382 | 380 | 72.27 (4.83) | 2.49 (1.24) | 67.67 (2.31) | ||
| Fall | 511 | 511 | 59.32 (6.79) | 2.71 (1.25) | 70.40 (4.72) | ||
| Christiana Hospital, Newark, DE | 39.69 | Winter | 262 | 261 | 40.03 (2.83) | 3.11 (1.94) | . |
| Spring | 447 | 444 | 57.63 (7.84) | 2.55 (0.81) | . | ||
| Summer | 408 | 408 | 76.87 (4.29) | 3.33 (1.41) | . | ||
| Fall | 502 | 501 | 61.68 (8.48) | 5.72 (1.95) | . | ||
| Denver Medical Center, Denver, CO | 39.73 | Winter | 172 | 168 | 31.23 (4.39) | 1.42 (0.88) | 57.33 (8.96) |
| Spring | 345 | 342 | 54.34 (5.72) | 0.86 (0.74) | 40.00 (7.21) | ||
| Summer | 321 | 320 | 75.41 (2.10) | 1.10 (0.94) | 33.00 (4.36) | ||
| Fall | 439 | 436 | 54.25 (10.43) | 1.30 (0.56) | 43.40 (3.97) | ||
| Duke University, Durham, NC | 36.01 | Winter | 213 | 209 | 44.30 (1.01) | 1.82 (0.20) | 64.00 (2.00) |
| Spring | 301 | 300 | 61.35 (6.28) | 3.86 (1.27) | 68.00 (4.58) | ||
| Summer | 332 | 329 | 76.38 (4.64) | 3.60 (1.08) | 70.33 (6.11) | ||
| Fall | 371 | 364 | 61.35 (7.90) | 4.37 (2.15) | 71.80 (3.56) | ||
| Emory University Hospital Midtown, Atlanta, GA | 33.79 | Winter | 247 | 239 | 49.30 (1.37) | 3.17 (1.49) | 63.67 (3.06) |
| Spring | 416 | 402 | 67.20 (5.15) | 2.75 (1.03) | 61.33 (3.21) | ||
| Summer | 426 | 417 | 79.15 (3.38) | 3.28 (0.75) | 65.67 (5.03) | ||
| Fall | 492 | 479 | 64.59 (7.96) | 2.35 (0.56) | 63.40 (2.88) | ||
| Henry Ford, Detroit, MI | 42.37 | Winter | 154 | 154 | 33.21 (2.36) | 2.07 (0.60) | 74.00 (2.00) |
| Spring | 280 | 279 | 55.09 (8.81) | 2.20 (0.44) | 60.67 (4.04) | ||
| Summer | 323 | 320 | 74.77 (3.57) | 2.52 (1.33) | 59.67 (4.51) | ||
| Fall | 322 | 317 | 56.19 (7.84) | 4.09 (2.27) | 70.00 (4.00) | ||
| Jackson Memorial Hospital, Miami FL | 25.79 | Winter | 187 | 185 | 70.69 (2.59) | 1.98 (2.52) | 68.33 (4.51) |
| Spring | 307 | 307 | 76.13 (2.44) | 6.44 (3.93) | 68.33 (4.93) | ||
| Summer | 290 | 290 | 82.60 (0.80) | 9.90 (2.40) | 73.67 (1.15) | ||
| Fall | 409 | 407 | 79.50 (3.39) | 7.63 (4.85) | 73.00 (2.24) | ||
| John Hopkins Hospital, Baltimore, MD | 39.30 | Winter | 147 | 145 | 42.87 (2.36) | 2.13 (0.72) | 64.00 (4.36) |
| Spring | 209 | 205 | 61.33 (8.55) | 2.00 (0.71) | 62.33 (8.62) | ||
| Summer | 257 | 254 | 79.95 (3.83) | 3.64 (1.39) | 66.00 (6.00) | ||
| Fall | 329 | 327 | 63.09 (8.40) | 4.54 (2.55) | 74.40 (5.18) | ||
| Lawrence & Memorial Hospital, New Haven, CT | 41.34 | Winter | 114 | 112 | 37.50 (2.46) | 2.70 (1.12) | . |
| Spring | 201 | 201 | 53.67 (7.83) | 3.22 (2.04) | . | ||
| Summer | 175 | 171 | 73.53 (3.79) | 4.32 (0.91) | . | ||
| Fall | 254 | 250 | 59.60 (8.14) | 4.78 (1.66) | . | ||
| Weill Cornell Medical College, New York, NY | 40.76 | Winter | 185 | 185 | 40.41 (2.82) | 2.55 (1.19) | 59.00 (3.61) |
| Spring | 302 | 301 | 56.61 (7.61) | 3.33 (2.34) | 60.67 (12.58) | ||
| Summer | 266 | 264 | 76.08 (3.95) | 3.63 (0.91) | 65.33 (2.08) | ||
| Fall | 373 | 368 | 61.65 (8.03) | 4.43 (1.80) | 70.60 (5.32) | ||
| St. Luke's Medical Center, Phoenix, AZ | 33.45 | Winter | 159 | 155 | 54.65 (3.55) | 0.36 (0.62) | 39.67 (11.55) |
| Spring | 220 | 216 | 72.15 (9.32) | 0.19 (0.18) | 19.67 (5.03) | ||
| Summer | 233 | 228 | 91.83 (1.21) | 0.84 (0.82) | 27.00 (11.27) | ||
| Fall | 267 | 256 | 77.36 (10.99) | 0.36 (0.41) | 30.40 (8.62) | ||
| University of Iowa, Iowa City, IA | 41.66 | Winter | 459 | 458 | 31.53 (2.14) | 1.31 (1.04) | . |
| Spring | 756 | 750 | 58.42 (8.08) | 3.32 (1.37) | . | ||
| Summer | 797 | 791 | 76.20 (5.21) | 2.02 (1.80) | . | ||
| Fall | 986 | 972 | 54.95 (8.60) | 2.42 (0.71) | . | ||
| University of Miami, Miami, FL | 25.79 | Winter | 120 | 118 | 70.69 (2.59) | 1.98 (2.52) | 68.33 (4.51) |
| Spring | 176 | 176 | 76.13 (2.44) | 6.44 (3.93) | 68.33 (4.93) | ||
| Summer | 207 | 208 | 82.60 (0.80) | 9.90 (2.40) | 73.67 (1.15) | ||
| Fall | 250 | 248 | 79.50 (3.39) | 7.63 (4.85) | 73.00 (2.24) | ||
| University Hospital. San. Antonio, TX | 29.51 | Winter | 249 | 249 | 55.05 (1.38) | 3.27 (0.64) | 69.67 (5.86) |
| Spring | 408 | 406 | 72.59 (7.16) | 3.09 (3.21) | 70.33 (5.03) | ||
| Summer | 376 | 376 | 85.34 (1.22) | 2.19 (1.74) | 62.67 (4.04) | ||
| Fall | 542 | 539 | 73.47 (8.03) | 3.21 (2.14) | 61.60 (9.29) | ||
| University of Wisconsin Hospital & Clinics, Madison, WI | 43.08 | Winter | 282 | 281 | 28.63 (2.76) | 1.61 (0.83) | 72.33 (2.31) |
| Spring | 451 | 446 | 53.77 (8.34) | 2.80 (0.71) | 63.67 (4.04) | ||
| Summer | 563 | 556 | 73.87 (4.73) | 2.11 (1.85) | 60.00 (6.00) | ||
| Fall | 623 | 616 | 52.12 (8.31) | 2.19 (1.05) | 68.80 (3.83) | ||
| Wake Med Hospital, Raleigh, NC | 35.78 | Winter | 127 | 127 | 47.13 (1.26) | 1.91 (0.32) | 64.00 (2.00) |
| Spring | 156 | 155 | 64.03 (6.82) | 3.48 (1.30) | 68.00 (4.58) | ||
| Summer | 178 | 178 | 79.02 (4.58) | 4.29 (1.66) | 70.33 (6.11) | ||
| Fall | 233 | 231 | 64.08 (8.26) | 4.28 (2.12) | 71.80 (3.56) | ||
| Duke University, Raleigh, NC | 35.83 | Winter | 199 | 194 | 47.13 (1.26) | 1.91 (0.32) | 64.00 (2.00) |
| Spring | 319 | 315 | 64.03 (6.82) | 3.48 (1.30) | 68.00 (4.58) | ||
| Summer | 341 | 336 | 79.02 (4.58) | 4.29 (1.66) | 70.33 (6.11) | ||
| Fall | 350 | 339 | 64.08 (8.26) | 4.28 (2.12) | 71.80 (3.56) | ||
* N represents total number of patients tested for either MRSA or VRE by site per season.