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Table 6 Floor and ceiling effects

From: Patient reported outcome measures (PROMs) in primary care: an observational pilot study of seven generic instruments

Instrument (n) Minimum score baseline Maximum score baseline Minimum score follow up Maximum score follow up
PAM-13 (47) 0.0% (0/47) 2.1% (1/47) 0.0% (0/47) 2.1% (1/47)
EC-17 (36) 0.0% (0/36) 2.8% (1/36) 0.0% (0/36) 0.0% (0/36)
EQ-5D (45) 0.0% (0/45) 22.2% (10/45) 0.0% (0/45) 44.4% (20/45)
EQ- VAS (47) 0.0% (0/47) 2.1% (1/47) 0.0% (0/47) 6.4% (3/47)
SF-12 PCS (42) 0.0% (0/42) 0.0% (0/42) 0.0% (0/42) 0.0% (0/42)
SF-12 MCS (42) 0.0% (0/42) 0.0% (0/42) 0.0% (0/42) 0.0% (0/42)
GHQ-12 (97) 0.0% (0/97) 0.0% (0/97) 0.0% (0/97) 0.0% (0/97)
PEI (97) 54.6% (53/97) 0.0% (0/97) 60.8% (59/97) 1.0% (1/97)
GPE (89) 1.1% (1/89) 5.6% (5/89) 0.0% (0/89) 6.7% (6/89)