Naeem Atanda Balogun, Faizat Adewumi Adeleke, Musbau Dogo Abdulrahaman, Yahaya Isah Shehu, Adeyinka Adedoyin
Undergraduate students' perception on e-learning systems during COVID-19 pandemic in Nigeria
Heliyon
december 7th 2007 estimated 12547 kl crude oil spilled collision hebei spirit near residential area previous study demonstrated worsening childrens asthma symptoms one year accident study investigated longterm effect oil spill childrens asthma symptoms five years accident elementary middle school students exposure area surveyed one year n 655 three years 664 five years 611 accident oil spill exposure estimated using two estimates including distance oil spill modeled estimates benzene toluene ethylbenzene xylene btex compounds b dichotomously categorized highexposure vs lowexposure b 20 mgm3 vs 20 mgm3 asthma symptoms evaluated using standard questionnaire oil spill exposure estimates associated asthma symptoms one year odds ratio 95 confidence interval 19 1131 b 16 0927 three years 19 1132 b 13 0822 five years 12 0719 b 18 1128 oil spill significant longitudinal relationship oil spill exposure estimates asthma symptoms also observed 16 1222 b 16 1121 overall effect oil spill exposure estimates severe younger children oil spill exposure estimates associated asthma symptoms children five years oil spill