| ACS | acute chest syndrome |
| aOR | adjusted odds ratio |
| CI | confidence interval |
| FEV1 | forced expiratory volume in one second |
| FEV1/FVC | ratio of forced expiratory volume in one second to forced vital capacity |
| OR | odds ratio |
| SCD | sickle cell disease |
| SD | standard deviation |
| STH | soil-transmitted helminths |
| STROBE | Strengthening the Reporting of Observational Studies in Epidemiology |
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