Validation of the 7-item knee replacement patient education questionnaire (KR-PEQ-7), based on the 16-item knee osteoarthritis patient education questionnaire (KOPEQ)

Table 2 Characteristics of all variables

Items	Mean (SD)	Median	Min	Max
Age	72.4 (8.19)	73	53	89
MMSE	28.4 (1.48)	28.5	25	30
S-TOFHLA 1^a	33.6 (1.89)	34.0	29	36
S-TOFHLA 2^a	10.6 (3.87)	10.0	4.83	23.67
S-TOFHLA 3^a	23.8 (7.61)	23.0	10	36
KOPEQ 1	90.5 (14.58)	95.0	15	100
KOPEQ 2	85.7 (18.77)	92.5	0	100
KOPEQ 3	91.8 (10.75)	95.0	52	100
KOPEQ 4	90.6 (11.18)	94.5	44	100
KOPEQ 5	91.8 (7.06)	92.5	72	100
KOPEQ 6	90.4 (11.6)	93.0	38	100
KOPEQ 7	89.5 (17.00)	94.5	0	100
KOPEQ 8	93.4 (6.74)	94.5	73	100
KOPEQ 9	92.7 (7.35)	95.0	71	100
KOPEQ 10	92.3 (7.97)	95.0	71	100
KOPEQ 11	92.7 (7.82)	95.0	73	100
KOEPQ 12	92.7 (7.95)	94.0	69	100
IP A1	91.4 (9.78)	94.5	55	100
IP A2	91.3 (8.60)	93.0	68	100
IP A3	92.1 (8.97)	94.0	62	100
IP A4	8.7 (15.41)	91.5	20	100
IP A5	91.8 (9.55)	95.0	64	100
IP A6	92.5 (7.50)	94.0	69	100
IP A7	92.4 (7.63)	93.5	66	100
IP A8	90.9 (14.82)	95.0	6	100
IP A9	92.0 (11.98)	96.0	48	100
IP A10	85.7 (15.26)	90.5	49	100
IP A11	94.5 (6.49)	98.0	73	100
IP A12	93.1 (10.10)	97.5	51	100
IP A13	76.9 (25.36)	81.0	0	100
IP A14	87.3 (15.99)	92.0	39	100
IP A15	93.7 (7.22)	96.0	73	100
IP A16	92.7 (8.41)	96.0	65	100
IP B1	92.9 (8.54)	96.0	60	100
IP B2	91.4 (12.61)	97.0	49	100
IP B3	71.5 (28.01)	81.5	0	100
IP B4	93.8 (7.22)	96.5	73	100
IP B5	94.0 (7.16)	96.0	74	100

^aS-TOFHLA 1 (reading comprehension / 0–36 points), S-TOFHLA 2 (needed total time in minutes), S-TOFHLA 3 (number of points after 7 min)

ISSN: 1471-2474