Table 1.

Descriptive characteristics of study completers and refusals

	Study completers	Refused nurse call or offer of intervention
	(n = 58)	(n = 65)
Age (years)	68.7 (7.8)	69.8 (6.9)
Female gender, n (%)	36 (62 %)	35 (54 %)
Educational attainment: school age only, n (%)	48 (84 %)	51 (84 %)
Lower social network indexa, n (%)	23 (42 %)	40 (68 %)
Body mass index (kg/m2)	32.1 (6.2)	31.6 (5.6)
HADb Anxiety score > 8, n (%)	14 (24 %)	17 (27 %)
HAD Depression score > 8, n (%)	8 (14 %)	6 (9 %)
Perceived financial strainc, n (%)	25 (43 %)	24 (37 %)
SF12: PCS (0–100)	34.4 (8.2)	35.8 (11.3)
SF12: MCS (0–100)	50.4 (10.2)	50.2 (10.1)
Knee flexion ROM (degrees)	126.3 (12.1)	124.8 (15.3)
Quadriceps isometric strength (KgF)	20.8 (7.5)	18.8 (7.7)
Single-leg standing balance time (seconds): median (IQR)	5.0 (9.6)	4.8 (11.8)
WOMAC Pain (0–20)	7.5 (3.7)	6.8 (4.3)
WOMAC Stiffness (0–8)	3.5 (1.6)	3.3 (2.1)
WOMAC Physical Function (0–68)	25.9 (12.8)	26.8 (14.5)

Figures are mean (standard deviation) unless otherwise stated

^aClassed as low or medium on Berkman-Syme Social Network Index [31]

^bHospital Anxiety & Depression scale [32]

^cResponded “find it a strain” or “have to be careful” in response to single item on perceived adequacy of income [30]