Table 4 Multivariate analysis of factors associated with adverse events reported after yoga class

Age (less than 40 years)

1.95

1.44-2.63

<0.001

Condition on the day of class

 Severity of physical condition on that day

1.58

1.14-2.18

0.006

 Level of overexertion

1.82

1.41-2.34

<0.001

 Physical strain

1.89

1.45-2.47

<0.001

 Mental strain

3.93

2.11-7.33

<0.001

Presence of chronic disease

1.29

1.03-1.62

0.030

 Respiratory disorders

1.78

1.06-2.97

0.028

 Musculoskeletal disorders

1.30

1.01-1.67

0.042

 Neurological disorders

1.39

0.86-2.26

0.180