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Table 2 The relationship between characteristics and grade 2-3 in MRI high signal of menisci among workers in Korea national park service (crude)

From: Risk factors for lesions of the knee menisci among workers in South Korea’s national parks

Variables crude
ORa (95 % CIb)
General characteristics
Sex Male 1
Female 2.12 (0.41 ~ 10.94)
Age (year) <45 1
≥45 2.09 (1.00 ~ 4.37)
BMI <25 1
≥25 1.11 (0.53 ~ 2.32)
Smoking Never or past 1
Current 0.71 (0.31 ~ 1.65)
Alcohol drinking <1 times/week 1
≥1 times/week 0.69 (0.33 ~ 1.41)
Regular exercise Once a week or more 1
Less than once a week 2.01 (0.60 ~ 6.71)
Previous exercise-related knee injury No 1
Yes 1.13 (0.50 ~ 2.53)
Previous accident-related knee injury No 1
Yes 1.96 (0.91 ~ 4.23)
Previous work-related knee injury No 1
Yes 1.81 (0.88 ~ 3.75)
Previous knee pain No 1
Yes 1.62 (0.64 ~ 4.08)
Past medical history No 1
Yes 2.04 (0.90 ~ 4.62)
Occupational characteristics
Overtime labor No 1
Yes 0.94 (0.37 ~ 2.38)
Holiday use Yes 1
No 1.01 (0.16 ~ 6.30)
Physical burden of work Low 1
High 1.34 (0.52 ~ 3.43)
Stair flight No 1
Yes 2.05 (0.86 ~ 4.92)
Kneeling No 1
Yes 1.16 (0.46 ~ 2.90)
The cumulative intensity of trekking 1 <17 years 1
(= Tenure) ≥17 years 2.64 (1.25 ~ 5.59)
The cumulative intensity of trekking 2 Low 1
Medium 1.66 (0.73 ~ 3.77)
High 3.47 (1.21 ~ 9.96)
The cumulative intensity of trekking 3 Low 1
Medium 2.07 (0.94 ~ 4.55)
High 5.65 (1.41 ~ 22.61)
  1. a OR Odds Ratio
  2. b CI Confidence Interval