Table 2

Relative risks of occupational injury from 3-day, 5-day and 7-day moving average of daily mean temperatures during the summer months ban on midday work (June–August) in Kuwait for the period from 2015 to 2019

3-day temperature
Moving average
5-day temperature
Moving average
7-day temperature
Moving average*
Relative risk (95% CI)
37.0°C (10th percentile)1 (reference)1 (reference)1 (reference)
38.0°C1.05 (0.95 to 1.15)1.11 (0.99 to 1.24)1.13 (1.00 to 1.27)
39.0°C1.16 (1.09 to 1.23)1.33 (1.24 to 1.44)1.36 (1.26 to 1.46)
39.4°C (mean)1.21 (1.14 to 1.28)1.43 (1.33 to 1.53)1.44 (1.34 to 1.53)
40.0°C1.28 (1.20 to 1.36)1.50 (1.40 to 1.61)1.48 (1.39 to 1.59)
41.0°C1.32 (1.20 to 1.45)1.44 (1.30 to 1.61)1.44 (1.27 to 1.63)
42.0°C (90th percentile)1.31 (1.12 to 1.54)1.33 (1.03 to 1.71)1.33 (0.99 to 1.79)
  • Temperature was fitted with penalised splines; all models were adjusted for seasonality, day of the week and relative humidity.

  • Values in bold represent statistically significant effect estimates (p<0.05).

  • *This model provided the lowest AIC.

  • AIC, Akaike information criterion.