Journal of Experimental Orthopaedics

Table 3 Comparison of outcome scores in relation to age

From: A simple rehabilitation regime improves functional outcome in patients with patellafemoral pain after 12 month

	< 15 Years (n = 16)	15–19 years (n = 29)	> 19 years (n = 20)
AKPS
Baseline	70 ± 18	69 ± 13	75 ± 10^a
3 months	78 ± 17	84 ± 11^c	87 ± 10 ^c
12 months	90 ± 11^d	89 ± 8^d	89 ± 9^d
- > 10-point improvement	80%	81%	71%
NRS-rest (Ω)
Baseline	2 (1–5)	3 (1–5)	2 (2–5)
3 months	2 (0–4)	0 (0–3)^c	0 (0–2)^c
12 months	0 (0–1)	0 (0–2)^d	0 (0–1)^d
- > 2 point improvement	75%	62%	83%
NRS-Activity (Ω)
Baseline	7 (5–9)	7 (6–9)	6 (4–7)
3 months	5 (4–7)	4 (3–6)^c	3 (2–5)^{b, c}
12 months	2 (0–5)^d	4 (2–7)^d	3 (1–5)^d
- > 2 point improvement	83%	63%	67%
Data completeness
3 months, n(%)	9 (56)	23 (79)	18 (90)
12 months, n(%)	12 (75)	20 (69)	16 (80)

Normally distributed data is presented as mean ± SD and non-normally data is presented as median (25th - 75th percentiles). Non-normally distributed data Ω
^asignificant difference between 15 and 19 years and > 19 years
^bSignificant difference between age < 15 and > 19 years
^cSignificant improvement from baseline to three months within subgroups
^dsignificant improvement from baseline to 12 months within subgroups

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