Factors of hearing loss depending on whether to use earplugs (Military Health Survey 2014–2015)
| Variables | Hearing loss | ||
| Always use earplugs | Sometimes use earplugs | Do not use earplugs | |
| Adjusted OR | Adjusted OR (95% CI) | Adjusted OR (95% CI) | |
| Sex | |||
| Man | 1 | 1.44 (1.04 to 1.99) | 1.51 (1.10 to 2.07) |
| Woman | 1 | – | – |
| Marital status | |||
| Married | 1 | 1.01 (0.51 to 2.00) | 1.81 (0.98 to 3.32) |
| Single (divorced, separated or bereaved) | 1 | 2.04 (0.43 to 9.64) | 0.83 (0.21 to 3.28) |
| Never married | 1 | 1.68 (1.14 to 2.48) | 1.55 (1.05 to 2.28) |
| Educational level | |||
| High school or less | 1 | 1.03 (0.47 to 2.26) | 2.00 (0.99 to 4.03) |
| College or more | 1 | 1.58 (1.10 to 2.26) | 1.40 (0.98 to 2.00) |
| Military type | |||
| Army | 1 | 1.33 (0.89 to 1.98) | 1.32 (0.89 to 1.95) |
| Navy and Marines | 1 | 1.43 (0.70 to 2.90) | 0.80 (0.38 to 1.65) |
| Air Force | 1 | 1.77 (0.70 to 4.47) | 3.41 (1.44 to 8.06) |
| Branch | |||
| Combat | 1 | 1.42 (0.96 to 2.09) | 1.39 (0.95 to 2.03) |
| Non-combat | 1 | 1.59 (0.87 to 2.91) | 1.80 (1.01 to 3.21) |
| Working area | |||
| Forward area | 1 | 1.52 (1.01 to 2.30) | 1.68 (1.13 to 2.50) |
| Rear area | 1 | 1.46 (0.86 to 2.48) | 1.36 (0.81 to 2.28) |
| Service classification | |||
| Long-term military service | 1 | 1.43 (0.85 to 2.43) | 1.88 (1.15 to 3.08) |
| Short-term military service | 1 | 1.49 (0.98 to 2.26) | 1.31 (0.87 to 1.98) |