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Table 3 The cumulative relative risks of adverse pregnancy outcomes in high and low UTCIa values relative to UTCI = 17.5 °C

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

Outcomes

UTCI value (°C)

Lag 0

Lag 0–2

Lag 0–6

Lag 0–13

Lag 0–21

Stillbirth

Hb

46.4

1.780 (0.793–3.997)

1.200 (0.521–2.763)

1.725 (0.609–4.890)

2.148 (0.529–8.719)

1.911 (0.283–12.913)

44.6

1.506 (0.721–3.145)

1.190 (0.559–2.536)

1.542 (0.588–4.044)

1.811 (0.480–6.838)

1.627 (0.263–10.076)

43.1

1.340(0.667–2.693)

1.179 (0.577–2.408)

1.414 (0.564–3.548)

1.579 (0.439–5.676)

1.411 (0.242–8.238)

Lc

16.2

1.008 (0.956–1.064)

0.976 (0.927–1.028)

0.957 (0.899–1.019)

0.946 (0.871–1.026)

0.949 (0.848–1.061)

14.4

1.004 (0.882–1.142)

0.940 (0.834–1.059)

0.898 (0.776–1.039)

0.890 (0.731–1.082)

0.874 (0.664–1.150)

11.6

0.949 (0.694–1.297)

0.880 (0.657–1.178)

0.814 (0.562–1.180)

0.858 (0.515–1.428)

0.769 (0.376–1.573)

LBW

H

46.4

0.623 (0.164–2.368)

0.990 (0.268–3.658)

2.505 (0.488–12.871)

0.781 (0.082–7.403)

0.111 (0.005–2.342)

44.6

0.647 (0.193–2.169)

1.209 (0.367–3.984)

2.635 (0.577–12.028)

0.959 (0.112–8.225)

0.168 (0.009–3.175)

43.1

0.665 (0.212–2.091)

1.361 (0.438–4.231)

2.641 (0.618–11.284)

1.056 (0.131–8.507)

0.217 (0.012–3.850)

L

16.2

1.004 (0.922–1.093)

0.998 (0.921–1.082)

0.96 (0.868–1.062)

0.977 (0.852–1.12)

0.935 (0.773–1.132)

14.4

0.954 (0.768–1.186)

0.986 (0.811–1.201)

0.869 (0.679–1.112)

0.833 (0.589–1.177)

0.763 (0.476–1.223)

11.6

0.763 (0.430–1.356)

0.953 (0.575–1.578)

0.672 (0.349–1.292)

0.475 (0.186–1.211)

0.434 (0.128–1.474)

PTL

H

46.4

0.988 (0.601–1.624)

1.108 (0.656–1.872)

1.192 (0.617–2.303)

1.012 (0.412–2.484)

2.392 (0.699–8.193)

44.6

1.058 (0.669–1.674)

1.192 (0.737–1.926)

1.285 (0.697–2.368)

1.078 (0.465–2.502)

2.387 (0.748–7.616)

43.1

1.103 (0.712–1.709)

1.245 (0.789–1.965)

1.343 (0.749–2.409)

1.115 (0.500–2.489)

2.330 (0.767–7.079)

L

16.2

0.996 (0.964–1.029)

0.977 (0.947–1.007)

0.985 (0.95–1.022)

1.017 (0.97–1.067)

1.014 (0.949–1.082)

14.4

1.009 (0.936–1.089)

0.980 (0.915–1.049)

1.033 (0.950–1.124)

1.101 (0.977–1.240)

1.108 (0.939–1.307)

11.6

1.087 (0.910–1.298)

1.086 (0.921–1.282)

1.337 (1.074–1.664)

1.449 (1.042–2.015)

1.536 (0.973–2.425)

SA

H

46.4

1.019 (0.584–1.780)

0.997 (0.568–1.752)

0.764 (0.378–1.543)

0.738 (0.285–1.910)

0.723 (0.199–2.624)

44.6

0.942 (0.570–1.556)

1.026 (0.618–1.704)

0.781 (0.409–1.494)

0.719 (0.292–1.769)

0.708 (0.207–2.417)

43.1

0.892 (0.556–1.432)

1.043 (0.647–1.682)

0.797 (0.430–1.479)

0.713 (0.299–1.700)

0.707 (0.215–2.322)

L

16.2

1.006 (0.971–1.042)

1.009 (0.975–1.043)

1.005 (0.964–1.047)

1.009 (0.955–1.066)

1.036 (0.961–1.116)

14.4

0.998 (0.919–1.084)

1.013 (0.939–1.093)

1.001 (0.912–1.098)

1.035 (0.913–1.173)

1.094 (0.918–1.303)

11.6

0.942 (0.776–1.144)

0.999 (0.836–1.193)

0.966 (0.769–1.213)

1.110 (0.811–1.520)

1.201 (0.774–1.864)

Pre-eclampsia

H

46.4

0.805 (0.458–1.415)

0.770 (0.432–1.370)

1.086 (0.530–2.225)

1.385 (0.529–3.629)

1.166 (0.316–4.303)

44.6

0.791 (0.475–1.317)

0.772 (0.459–1.298)

1.071 (0.552–2.075)

1.378 (0.555–3.417)

1.126 (0.325–3.895)

43.1

0.779 (0.481–1.260)

0.774 (0.474–1.264)

1.058 (0.563–1.987)

1.354 (0.566–3.239)

1.073 (0.324–3.557)

L

16.2

1.028 (0.991–1.066)

1.01 (0.976–1.046)

0.998 (0.958–1.04)

1.011 (0.958–1.067)

0.998 (0.927–1.075)

14.4

1.052 (0.966–1.146)

1.033 (0.956–1.116)

1.038 (0.946–1.139)

1.062 (0.935–1.207)

0.982 (0.818–1.180)

11.6

1.050 (0.857–1.285)

1.091 (0.909–1.311)

1.236 (0.981–1.557)

1.261 (0.900–1.766)

0.936 (0.573–1.530)

Gestational hypertension

H

46.4

1.411 (0.758–2.626)

1.023 (0.549–1.908)

1.351 (0.619–2.948)

1.183 (0.411–3.409)

1.045 (0.249–4.387)

44.6

1.410 (0.805–2.470)

1.037 (0.589–1.824)

1.455 (0.706–2.999)

1.381 (0.506–3.767)

1.151 (0.292–4.541)

43.1

1.412 (0.832–2.396)

1.052 (0.617–1.795)

1.544 (0.775–3.079)

1.551 (0.590–4.080)

1.248 (0.330–4.717)

L

16.2

0.968 (0.931–1.006)

0.995 (0.959–1.031)

0.955 (0.913–0.999)

0.962 (0.907–1.021)

0.961 (0.885–1.043)

14.4

0.932 (0.852–1.020)

0.983 (0.906–1.067)

0.924 (0.834–1.024)

0.963 (0.837–1.109)

0.951 (0.779–1.160)

11.6

0.897 (0.725–1.109)

0.952 (0.778–1.165)

0.950 (0.731–1.234)

1.110 (0.771–1.600)

1.047 (0.621–1.764)

  1. Statistically significant values are given in bold
  2. aUniversal Thermal Climate Index (°C)
  3. bHigh UTCI values
  4. cLow UTCI values
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Reproductive Health

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