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Table 2 Descriptive statistics of adverse pregnancy outcomes, air pollutants and UTCI in Ahvaz city, 2008–2018

From: Universal Thermal Climate Index (UTCI) and adverse pregnancy outcomes in Ahvaz, Iran

Variable (mean per day)

N

Mean ± SD

Median

Min

Max

Stillbirth

1965

0.5 ± 0.8

0

0

5

LBWa

863

0.2 ± 0.6

0

0

5

PTLb

5776

1.6 ± 1.9

1

0

12

SAc

5063

1.4 ± 1.4

1

0

8

Pre-eclampsia

4357

1.2 ± 1.2

1

0

8

Gestational hypertension

4030

1.1 ± 1.2

1

0

13

NO2d (µg/m3)

–

46.4 ± 43.1

35.6

1.5

443.8

SO2e (µg/m3)

–

48.8 ± 57.0

35.9

0

907.4

PM10f (µg/m3)

–

216.9 ± 278.3

149.2

1.8

4324.2

UTCIg

–

29.0 ± 10.1

28.6

5.8

49.8

  1. aLow birth weight
  2. bPreterm labor
  3. cSpontaneous abortion
  4. dNitrogen dioxide
  5. eSulfur dioxide
  6. fParticulate matter less than 10 microns
  7. gUniversal thermal climate index