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Table 4 Rate of STEMI associated with each interquartile range increase in pollutant concentration in the Before, During, and After periods

From: Changes in triggering of ST-elevation myocardial infarction by particulate air pollution in Monroe County, New York over time: a case-crossover study

Lag hours

IQR

Before (2005–2007)

During (2008–2013)

After (2014–2016)

No. of STEMI

OR

95%CI

No. of STEMI

OR

95%CI

No. of STEMI

OR

95%CI

PM2.5 (μg/m3)

 0

7.59

234

1.03

0.91, 1.17

339

1.07

0.92, 1.24

285

0.99

0.81, 1.21

 0–2

7.33

233

1.04

0.92, 1.18

333

1.04

0.90, 1.21

282

1.08

0.86, 1.34

 0–11

6.57

235

1.03

0.91, 1.15

336

1.01

0.87, 1.18

284

1.00

0.81, 1.24

 0–23

6.21

234

1.00

0.89, 1.13

335

1.00

0.85, 1.17

285

1.03

0.83, 1.28

 0–47

5.71

235

0.96

0.84, 1.09

328

0.98

0.83, 1.17

285

1.07

0.85, 1.34

 0–71

5.30

232

0.91

0.79, 1.05

321

0.98

0.82, 1.18

280

1.11

0.88, 1.41

AMP (particles/cm3)

 0

698

166

1.07

0.93, 1.23

328

1.07

0.93, 1.24

285

1.08

0.84, 1.38

 0–2

688

165

1.07

0.93, 1.23

322

1.03

0.89, 1.20

284

1.05

0.82, 1.35

 0–11

693

165

0.99

0.84, 1.18

328

1.08

0.90, 1.29

287

0.99

0.75, 1.29

 0–23

670

161

0.95

0.79, 1.14

327

1.05

0.87, 1.27

284

1.06

0.80, 1.39

 0–47

602

156

0.98

0.81, 1.19

324

1.01

0.83, 1.23

283

1.06

0.80, 1.42

 0–71

543

148

0.95

0.78, 1.16

321

0.97

0.80, 1.18

282

1.00

0.75, 1.34

UFP (particles/cm3)

 0

3702

166

1.09

0.96, 1.23

328

1.05

0.88, 1.24

285

1.26

1.07, 1.48

 0–2

3506

165

1.12

0.99, 1.27

322

0.99

0.83, 1.18

284

1.24

1.04, 1.48

 0–11

3265

165

1.11

0.94, 1.32

328

0.97

0.79, 1.21

287

1.04

0.81, 1.32

 0–23

2955

161

1.00

0.83, 1.21

327

0.96

0.77, 1.20

284

1.07

0.83, 1.38

 0–47

2568

156

1.06

0.86, 1.30

324

1.01

0.80, 1.28

283

1.14

0.87, 1.49

 0–71

2349

148

0.95

0.76, 1.18

321

0.94

0.73, 1.21

282

1.18

0.89, 1.56

UFP 11-50 nm (particle/cm3)

 0

2755

166

1.10

0.98, 1.24

328

1.04

0.87, 1.23

285

1.22

1.06, 1.41

 0–2

2551

165

1.12

1.00, 1.27

322

0.98

0.82, 1.17

284

1.22

1.04, 1.42

 0–11

2344

165

1.10

0.94, 1.31

328

0.93

0.75, 1.16

287

1.02

0.81, 1.29

 0–23

2151

161

1.01

0.83, 1.23

327

0.90

0.71, 1.14

284

1.01

0.78, 1.31

 0–47

1862

156

1.09

0.87, 1.35

324

0.98

0.76, 1.26

283

1.05

0.79, 1.39

 0–71

1682

148

0.95

0.75, 1.19

321

0.91

0.69, 1.20

282

1.13

0.84, 1.51

UFP 50-100 nm (particles/cm3)

 0

1161

166

1.03

0.92, 1.16

328

1.04

0.90, 1.21

285

1.14

0.95, 1.37

 0–2

1108

165

1.07

0.95, 1.21

322

1.01

0.86, 1.18

284

1.12

0.92, 1.35

 0–11

1118

165

1.09

0.92, 1.30

328

1.06

0.87, 1.29

287

1.04

0.84, 1.29

 0–23

1035

161

0.99

0.83, 1.19

327

1.06

0.87, 1.30

284

1.15

0.91, 1.45

 0–47

952

156

1.01

0.82, 1.25

324

1.07

0.85, 1.34

283

1.27

0.98, 1.64

 0–71

844

148

0.95

0.76, 1.17

321

0.98

0.78, 1.24

282

1.22

0.93, 1.59

BC (μg/m3)

 0

0.44

241

1.07

0.96, 1.20

353

1.06

0.93, 1.20

297

1.27

1.02, 1.59

 0–2

0.43

241

1.08

0.97, 1.21

347

1.07

0.94, 1.23

297

1.16

0.92, 1.47

 0–11

0.42

241

1.04

0.90, 1.19

352

1.05

0.90, 1.24

298

1.09

0.84, 1.42

 0–23

0.39

241

1.01

0.87, 1.17

353

1.05

0.89, 1.24

299

1.20

0.92, 1.56

 0–47

0.35

236

1.06

0.91, 1.24

349

1.08

0.90, 1.30

299

1.30

0.98, 1.73

 0–71

0.33

233

1.00

0.84, 1.18

348

0.98

0.80, 1.21

300

1.32

0.98, 1.78

SO2 (ppb)

 0

1.77

243

1.02

0.97, 1.08

353

1.02

0.91, 1.14

293

1.18

1.01, 1.36

 0–2

2.20

243

1.07

0.98, 1.17

348

1.06

0.90, 1.26

293

1.34

1.07, 1.69

 0–11

2.27

242

1.18

1.05, 1.33

351

1.04

0.84, 1.30

296

1.40

1.00, 1.98

 0–23

2.30

245

1.14

0.99, 1.32

354

0.98

0.73, 1.31

297

1.62

1.10, 2.38

 0–47

2.19

244

1.11

0.93, 1.32

346

1.08

0.77, 1.53

296

1.61

0.98, 2.65

 0–71

2.22

242

1.10

0.89, 1.36

344

1.37

0.92, 2.05

297

1.55

0.84, 2.83

O3 (ppb)

 0

18.0

245

0.88

0.70, 1.11

350

0.91

0.74, 1.13

289

0.88

0.68, 1.13

 0–2

17.3

244

0.86

0.68, 1.08

342

0.94

0.76, 1.16

286

0.91

0.70, 1.17

 0–11

15.2

243

0.87

0.69, 1.09

349

0.98

0.79, 1.21

296

0.91

0.71, 1.17

 0–23

13.7

247

0.91

0.70, 1.16

350

0.96

0.76, 1.20

296

0.89

0.68, 1.16

 0–47

12.9

247

0.75

0.57, 0.99

344

0.96

0.74, 1.25

296

0.90

0.67, 1.21

 0–71

12.3

246

0.78

0.59, 1.04

340

1.06

0.80, 1.40

297

0.86

0.63, 1.18

CO (ppm)

 0

0.23

242

1.09

0.94, 1.26

334

1.31

1.02, 1.68

290

1.29

0.85, 1.96

 0–2

0.23

242

1.09

0.94, 1.26

324

1.28

1.00, 1.65

286

1.11

0.69, 1.78

 0–11

0.21

241

1.05

0.88, 1.25

337

1.29

0.97, 1.70

295

1.05

0.64, 1.70

 0–23

0.22

243

0.99

0.81, 1.20

335

1.26

0.93, 1.71

297

1.20

0.70, 2.06

 0–47

0.21

242

1.03

0.84, 1.26

332

1.32

0.96, 1.82

296

1.14

0.62, 2.11

 0–71

0.21

242

1.00

0.81, 1.24

326

1.35

0.95, 1.93

296

1.13

0.56, 2.27

  1. Odds ratios were estimated from conditional logistic regression models adjusting for mean temperature and relative humidity during the same lag hour(s)
  2. IQR interquartile range, STEMI ST-elevation myocardial infarction, OR odds ratio, 95%CI 95% confidence interval
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Environmental Health

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