TABLE 1.

Pain Matcher^* threshold values in both groups

	Aquarium group			Control group
	Time	Mean	Range	Time, min	Mean	Range
First noticeable sensation	Before exposure	4.07	2–8	0	4.07	3–8
	5 min	4.03	2–7	5	3.86	3–5
	10 min	4.03	2–9	10	4.07	3–5
	20 min	4.04	2–7	20	4.07	3–5
	30 min	4.22	2–8	30	3.93	2–7
	10 min after the end of exposure	4.20	2–10	40	4.21	3–5
Pain threshold	Before exposure	16.03	3–63	0	18.43	8–68
	5 min	19.67	3–82	5	17.57	10–34
	10 min	22.16	3–100	10	17.64	9–42
	20 min	21.88	3–100	20	21.79	11–86
	30 min	25.20	3–100	30	22.21	9–86
	10 min after the end of exposure	24.58	4–100	40	23.71	10–99

^*Cefar Medical AB, Sweden