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Table 3 Mean values of quantifiers used to respond in the NDI questionnaire. The last column of the table contains the number of answers with a non-zero value for the particular quantifier

From: Evaluation of using the Anderson-Montesano and the Tuli classifications in pediatric patients with occipital condyle fractures

Quantifier of the NDI questionnaire

Mean

No. of instances in the survey

Pain intensity

1.1666667

6

Personal care

0.1666667

1

Lifting

0.1666667

1

Reading

0.5000000

3

Headaches

0.8333333

4

Concentration

0.3333333

2

Work

0.1666667

1

Sleeping

0.8333333

5

Recreation

0.1666667

1