Table 4 PSQI results, HADS results, and use of hypnotics and anti-depressants after 3 months in the intervention group (n = 19) and the control group (n = 13)

Subjective sleep quality

 Very good/quite good

10 (62.5)

3 (30.0)

0.107

 Very bad/quite bad

6 (37.5)

7( 70.0)

Sleep latency (min)

 0–4

14 (82.4)

5 (45.5)

0.041

 5–6

3 (17.6)

6 (54.5)

Sleep duration (h)

 5 h or more

11 (68.8)

1 (11.1)

0.006

  < 5 h

5 (31.3)

8 (88.9)

Sleep disruptions

 1–9

15 (88.2)

6 (54.5)

0.044

 10–27

2 (11.8)

5 (45.5)

Use of a hypnotic^a

 None in the last month

10 (58.8)

4 (36.4)

0.408

 1 or 2 times per week

2 (11.8)

1 (9.1)

 3 or more times per week

5 (29.4)

6 (54.5)

Day dysfunction

 0

5 (29.4)

4 (36.4)

0.249

 1–2

8 (47.1)

2 (18.2)

 3–6

4 (23.5)

5 (45.5)

HADS depression^a

 None (0–7)

14 (82.4)

9 (81.8)

0.971

 Possible (≥ 8)

3 (17.6)

2 (18.3)

HADS anxiety

 None (0–7)

9 (52.9)

6 (54.5)

0.934

 Possible (≥ 8)

8 (47.1)

5 (45.5)

Hypnotic use^a

 No

6 (42.9)

2 (28.6)

0.276

 Yes

6 (42.9)

5 (42.9)

  < 4 doses/months

2 (14.3)

0 (0.0)

Beginning hypnotic use^a

 Yes

0 (0.0)

1 (33.3)

0.117

 No

6 (100.0)

2 (66.7)

Beginning antidepressant use^a

 Yes

1 (7.1)

3 (33.3)

0.107

 No

13 (92.9)

6 (66.7)