Table 3.

Sleep measurements, pain scores, sleep medication efficacy.

Parameter	Zopiclone 3.75 mg	Zopiclone 7.5 mg	Clonidine 0.1 mg	Clonidine 0.2 mg
Pain score	4.5–5.5	4.5–5.5	2.8–3.2	1.8–2.2
Time to fall asleep
Minutes	43.5–46.5	39.2–40.8	34.2–35.8	24.2–25.8
Score out of 10	0.8–1.2	0.8–1.2	2.8–3.2	3.8–4.2
Waking during night sleep
Number of times	1.8–2.2	0.8–1.2	1	1
Score out of 10	6.8–7.2	8.8–9.2	8.8–9.2	8.8–9.2
Feeling rested in morning, score out of 10	3.8–4.2	4.8–5.2	5.8–6.2	7.8–8.2
Overall sleep quality, score out of 10	3.8–4.2	4.8–5.2	5.8–6.2	7.8–8.2
Total Likert sleep score	15.3–16.7	19.5–20.5	23.8–24.2	28.8–29.2
Total sleep duration, hours	3.8–4.2	4.8–5.2	5.8–6.2	7.8–8.2

Values are given as 95% confidence intervals. For total sleep scores and duration, higher scores are better.