Table 1.

 Baseline characteristics of participants for intervention groups and study cohort. Values are mean (SD) unless stated otherwise

Characteristics	Foot orthoses (n=46)	Flat inserts (n=44)	Physiotherapy (n=45)	Foot orthoses plus physiotherapy (n=44)	Total (n=179)
Age (years)	27.9 (5.3)	29 (6.0)	30.9 (5.8)	29.6 (5.6)	29.3 (5.8)
No (%) of women	25 (54.3)	20 (45.5)	29 (64.4)	26 (59.1)	100 (55.9)
Height (cm)	172.8 (9.1)	174.9 (10.5)	170.9 (8.4)	173.3 (9.6)	173 (9.5)
Weight (kg)	78.5 (20.4)	73.8 (15.9)	70.9 (14.6)	75.2 (22.3)	74.7 (18.6)
Body mass index	26.1 (5.6)	23.9 (3.5)	24.2 (4.7)	24.8 (6.2)	24.8 (5.1)
Physical activity* (kcal/kg)	40.6 (7.1)	41.3 (7)	41.2 (7.3)	40.8 (8.1)	41 (7.3)
No (%) with bilateral knee pain	26 (56.5)	25 (56.8)	26 (57.8)	25 (56.8)	102 (57)
Median (interquartile range) duration of knee pain (months)	42 (12.3-96)	24 (12-71)	37 (12.3-84.8)	24 (9-60)	28 (12-84)
Usual pain†	38.6 (16)	32.8 (15.1)	34.1 (17.0)	39.8 (17.6)	36.3 (16.6)
Worst pain†	59.4 (15.3)	56.6 (14.9)	61.4 (15.6)	64.8 (17.0)	60.5 (15.9)
Anterior knee pain scale‡	70.8 (9.0)	72.1 (9.3)	71.7 (11.3)	71.5 (9.8)	71.5 (9.8)
Functional index questionnaire§	10 (1.9)	10 (1.9)	10 (2.6)	9.3 (2.0)	9.8 (2.1)

*Physical activity over previous week questionnaire, total energy expended per day.

†Pain measured on 100 mm visual analogue scale; 0 mm=no pain, 100 mm=worst pain imaginable.

‡0-100 points; 100=no disability.

§0-16 points; 16=no disability.