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Table 1 Data concerning age and body mass index (BMI) in the studied groups by gender

From: Predictive factors for degenerative lumbar spinal stenosis: a model obtained from a machine learning algorithm technique

Variables

Control (n = 180)

Stenosis (n = 165)

 

Males (n = 90)

Females (n = 90)

Males (n = 80)

Females (n = 85)

Age (%):

40–60 years

48 (n = 43)

49 (n = 44)

28 (n = 22)

41 (n = 35)

61–90 years

52 (n = 47)

50 (n = 45)

72 (n = 58)

59 (50)

 > 90 years

0

1 (n = 1)

0

0

BMI (%):

18.5—24.9

27 (n = 24)

33 (n = 30)

19 (n = 15)

11 (n = 9)

25- 29.9

50 (n = 45)

35 (n = 31)

41 (n = 33)

33 (n = 28)

 ≥ 30

23 (n = 21)

32 (n = 28)

40 (n = 32)

56 (48)