WBGT* | Heat stress | Respiratory | ||||||

df(F) | n | M | SD | df(F) | n | M | SD | |

19.33‒23.05 | 206 (2.70)^{*} | 19 | 0.00^{**b} | 0.00 | 206 (4.20)** | 19 | 3.47*^{bd} | 2.76 |

23.06‒27.00 | 38 | 0.05**^{b} | 0.32 | 38 | 3.79**^{bd} | 2.06 | ||

27.01‒30.95 | 46 | 0.02**^{b} | 0.15 | 46 | 3.76**^{bd} | 2.50 | ||

30.96‒33.20 | 42 | 0.10*^{b} | 0.37 | 42 | 2.81 | 2.02 | ||

33.21‒34.43 | 43 | 0.28^{a} | 0.59 | 43 | 2.16^{c} | 2.29 | ||

34.44‒36.26 | 19 | 0.16 | 0.50 | 19 | 2.00^{a} | 1.53 |

*p<0.05, **p<0.01, statistically significant differences between (a – b and c – d). ‘n’ = number of weeks in each category. ‘M’ = average number of events of heat stress and respiratory symptoms respectively in each category.

ANOVA = Analysis of Variance

WBGT, Wet Bulb Globe Temperature.