Table 2.

Beliefs, psychosocial and clinical characteristics of the clusters

	Clusters with non-adherence behaviour		Clusters with adherence behaviour
	Cluster 1 (ambivalent)	Cluster 2 (sceptical)	Cluster 3 (indifferent)	Cluster 4 (accepting)
Medication adherence	Low adherence	Low adherence	High adherence	High adherence
Beliefs in medicines	High NB	Low NB	Low NB	High NB
	High CB	High CB	Low CB	Low CB
Illness perceptions	High IP	High IP	Low IP	Low IP
SE	Low SE	Low SE	High SE	High SE
HL	Low HL	High HL	High HL	High HL
Glycaemic control	High HbA1c	High HbA1c	Low HbA1c	Low HbA1c
Illness perception domains	High consequence	High consequence	Low consequence	High consequence
	High treatment control	High treatment control	Low treatment control	Low treatment control
	High identity	High identity	Low identity	Low identity
	High concern	High concern	Low concern	High concern
	High coherence	High coherence	Low coherence	Low coherence
	High emotional representation	High emotional representation	Low emotional representation	Low emotional representation

The high and low values for each variable is compared based on the mean values from all participants.

CB, concern beliefs; HbA1c: haemoglobin A1c levels; HL, health literacy; IP, illness perceptions; NB, necessity beliefs; SE, self-efficacy.