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Table 6 PGIC results for age- and gender-matched postal patients (responders) and telephone patients (non-responders)

From: Imaging-guided lumbar facet injections: is there a difference in outcomes between low back pain patients who remember to return a postal questionnaire and those who do not?

Baseline data and outcomes

Responders (postal)

Non-responders (telephone)

PGIC improved (1 and 2)

38 %

50 %

PGIC worse (5, 6 and 7)

14 %

4 % P = 0.02

 Slightly worse (5)

6 %

4 %

 Worse (6)

5 %

0 %

 Much worse (7)

3 %

0 %

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