Table 2.

Number and frequencies of responses; internal consistency and exploratory factor analysis.

	n	%	α if deleted	Change	PC 1	PC 2	PC 3
1. Do you sometimes forget to take your diabetes medicine?
Yes	56	24.1%	0.3136	−0.0864	0.723
No	176	75.9%
2. People sometimes miss taking their medicines for reasons other than forgetting. Thinking over the past two weeks, were there any days when you did not take your diabetes medicine?
Yes	26	11.2%	0.2421	−0.1579	0.690
No	206	88.8%
3. Have you ever cut back or stopped taking your diabetes medicine without telling your doctor because you felt worse when you took it?
Yes	15	6.5%	0.3986	−0.0014		0.693
No	217	93.5%
4. When you travel or leave home, do you sometimes forget to bring along your diabetes medicine?
Yes	8	3.4%	0.3848	−0.0152			0.642
No	224	96.6%
5. Did you take your diabetes medicine yesterday?
No	6	2.6%	0.3867	−0.0133		0.694
Yes	226	97.4%
6. When you feel like your diabetes is under control, do you sometimes stop taking your medicine?
Yes	4	1.7%	0.3882	−0.0118			−0.551
No	228	98.3%
7. Taking medicine every day is a real inconvenience for some people. Do you ever feel hassled about sticking to your diabetes treatment plan?
Yes	42	18.1%	0.4247	0.0247			0.540
No	190	81.9%
8. How often do you have difficulty remembering to take all your diabetes medicine?
a	0	0.0%	0.3708	−0.0292	−0.459
b	0	0.0%
c	5	2.2%
d	24	10.3%
e	203	87.5%
% explained variance					19.9%	16.4%	14.4%

% total explained variance: 50.7%.

PC, principal component.