Table 1.

Characteristics of the study sample

Characteristics		Study sample (n = 627) Mean (sd) or n (%)	Non response (n = 667) Mean (sd) or n (%)
Age in years		65.1 (sd = 11.6)	63.5 (sd = 14.3)
Gender	Male	313 (49.9%)	313 (46.9%)
Level of education	Low	199 (31.7%)	220 (32.98%)
	Medium	276 (44.0%)	276 (41.38%)
	High	152 (24.2%)	122 (18.29%) Missing = 49 (7.4%)
Chronic condition	One	306 (48.8%)	321 (48.1%)
	Two or more	321 (51.2%)	343 (51.4%) Missing = 3 (0.5%)
Data collection	By post	376 (60.9%)
	Online	248 (39.6%)
	By telephone	3 (0.5%)
General self-efficacy		3.12 (sd = 0.6)
Physical Health Composite Score		42.81 (sd = 11.4)
Willing to self-monitor		348 (55.5%)