Skip to main content

Table 1 Summary of the characteristics of the randomized controlled trials included in the meta-analysis

From: Dropouts in randomized clinical trials of Korean medicine interventions: a systematic review and meta-analysis

Author (year)

Protocol

Institutions, n

Blinding

Sample size (T/C)

Study design

Treatment intervention

Control intervention

Disease

Severity

Treatment period

Treatments, n

Funding

Choi (2010) [12]

Multicenter

4

Single

175 (116/59)

Parallel group

Acupuncture

Usual care

Perimenopause and post-menopause

NR

4 weeks

12

Yes

Choi (2012) [13]

Multicenter

3

Open

150 (75/75)

Parallel group

Acupuncture

Usual care

Dry eye

Other

8 weeks

12

Yes

Choi (2012) a [14]

Single-center

1

Single

42 (14/28)

Parallel group

Acupuncture

Distant and combination point

Temporomandibular joint disorder

Other

2 weeks

6

Yes

Choi (2015) [15]

Single-center

1

Single

30 (15/15)

Parallel group

Acupuncture

No treatment

Hypertension

Other

8 weeks

16

Yes

Choi (2015) a [16]

Multicenter

4

Open

150 (49/51)

Parallel group

Acupuncture

Sham acupuncture

Fatigue

Chronic

4 weeks

10

Yes

Choi (2018) [17]

Single-center

1

Single

30 (15/15)

Parallel group

Acupuncture

Sham acupuncture

Functional constipation

Other

4 weeks

12

Yes

Choi (2018) a [18]

Multicenter

4

Single

126 (63/63)

Parallel group

Acupuncture

Placebo

Diabetic peripheral neuropathy

Other

8 weeks

16

Yes

Han (2018) [19]

Single-center

1

Single

40 (20/20)

Parallel group

Embedding acupuncture

Acupuncture

Low back pain

Chronic

8 weeks

T4/C16

Yes

Jung (2009) [20]

Single-center

1

Double

52 (27/25)

Parallel group

Acupuncture

Sham acupuncture

Stroke

Other

3 days

1

Yes

Kim (2010) [21]

Single-center

1

Double

60 (30/30)

Parallel group

Pharmaco-acupuncture

Sham acupuncture

Osteoarthritis

Other

6 weeks

12

Yes

Kim (2018) b [22]

Multicenter

2

Open

16 (9/7)

Parallel group

Acupuncture

No treatment

Liver cirrhosis

Other

4 weeks

12

Yes

Lee (2011) [23]

Single-center

1

Single

54 (57/57)

Parallel group

Acupuncture

Sham acupuncture

Perimenopause and post-menopause

Other

7 weeks

11

Yes

Lee (2013) [24]

Single-center

1

Single

45 (15/30)

Parallel group

Acupuncture

Usual care

Neck pain

Chronic

3 weeks

9

Yes

Lee (2018) [25]

Single-center

1

Double

30 (15/15)

Parallel group

Acupuncture

Sham acupuncture

Cancer pain

Other

3 weeks

NR

Yes

Nam (2017) [26]

Single-center

1

Open

45 (13/29)

Parallel group

Acupuncture

Electro-acupuncture

Tinnitus

Other

4 weeks

8

No

Park (2014) [27]

Single-center

1

Single

61 (31/30)

Parallel group

Electro-acupuncture

Electro-acupuncture

Pain

Other

NR

1

Yes

Park (2016) [28]

Multicenter

2

Open

76 (37/39)

Other

Acupuncture

Acupuncture

Functional dyspepsia

Other

4 weeks

2

Yes

Shin (2018) [29]

Single-center

1

Single

39 (18/21)

Parallel group

Electro-acupuncture

Usual care

Low back pain

Chronic

4 weeks

8

Yes

Song (2013) [30]

Multicenter

3

Double

130 (65/65)

Parallel group

Acupuncture

Sham acupuncture

Low back pain

Chronic

6 weeks

12

Yes

Yang (2016) [31]

Single-center

1

Open

50 (26/24)

Parallel group

Acupuncture

Usual care

Lumbar spinal stenosis

Other

6 weeks

72–96

Yes

Yoo (2015) [32]

Single-center

1

Double

14 (7/7)

Parallel group

Acupuncture

Sham acupuncture

Thyroid cancer

Other

2 weeks

6

Yes

Chang (2018) [33]

Multicenter

2

Double

140 (70/70)

Parallel group

Herbal medicine

Placebo

Children with mild short stature

Other

24 weeks

336

N.R

Jung (2012) [34]

Single-center

1

Double

144 (73/71)

Parallel group

Herbal medicine

Placebo

Hwa-byung

Other

8 weeks

4

Yes

Kim (2011) [35]

Single-center

1

Double

166 (110/56)

Parallel group

Herbal medicine

Other

Obesity

Other

8 weeks

168

Yes

Kim (2013) [36]

Multicenter

2

Double

100 (50/50)

Parallel group

Herbal medicine

Placebo

Functional dyspepsia

Other

6 weeks

2

Yes

Kim (2014) [37]

Single-center

1

Double

50 (25/25)

Parallel group

Herbal medicine

Placebo

Obesity

Other

8 weeks

2 T/day

Yes

Kim (2016) [38]

Multicenter

2

Double

96 (48/48)

Parallel group

Herbal medicine

Placebo

Oral mucositis

Other

8 weeks

2

Yes

Kim (2019) [39]

Single-center

1

Double

60 (30/30)

Parallel group

Herbal medicine

Placebo

Allergic rhinitis

Other

4 weeks

2

Yes

Ko (2017) [40]

Single-center

1

Double

32 (16/16)

Parallel group

Herbal medicine

Placebo

Cancer-related anorexia

Other

4 weeks

2

Yes

Nah (2018) [41]

Multicenter

2

Double

143 (70/73)

Parallel group

Herbal medicine

Placebo

Knee osteoarthritis

Other

6 weeks

1

Yes

Son (2013) [42]

Single-center

1

Double

90 (60/30)

Parallel group

Herbal medicine

Placebo

Fatigue

Chronic

4 weeks

1

Yes

Yoon (2010) [43]

Single-center

1

Open

40 (20/20)

Parallel group

Herbal medicine

No treatment

Cancer-related fatigue

Other

2 weeks

1

Yes

Yoon (2018) [44]

Single-center

1

Open

30 (15/15)

Parallel group

Herbal medicine

No treatment

Cancer-related sleep disturbance

Other

2 weeks

1

Yes

Choi (2011) a [45]

Single-center

1

Single

26 (13/13)

Parallel group

Moxibustion

Sham moxibustion

Functional constipation

Other

4 weeks

12

Yes

Choi (2014) [46]

Multicenter

4

Open

212 (102/110)

Parallel group

Moxibustion

Usual care

Knee osteoarthritis

Other

4 weeks

4

Yes

Yoo (2017) [47]

Single-center

1

Single

16 (9/7)

Parallel group

Moxibustion

Sham moxibustion

Metastatic cancer

Other

2 weeks

10

Yes

Choi (2011) [48]

Single-center

1

Open

32 (21/11)

Parallel group

Cupping

No treatment

Low back pain

Other

2 week

6

Yes

Hong (2012) [49]

Single-center

1

Open

40 (20/20)

Parallel group

Cupping

Usual care

Neck pain

Other

2 weeks

6

Yes

Kim (2015) [50]

Single-center

1

Open

27 (15/12)

Parallel group

Other

Usual care

Hwa-byung

Other

4 weeks

4

Yes

Kim (2016) a [51]

Single-center

1

Single

14 (7/7)

Parallel group

Other

Placebo

Head and neck cancer

Other

8 weeks

4

Yes

Park (2018) [52]

Single-center

1

Double

73 (29/29)

Parallel group

Other

Sham

Parkinson’s disease

Other

12 weeks

24

Yes

Yoon (2016) [53]

Single-center

1

Single

30 (15/15)

Parallel group

Other

Usual care

Breast cancer

Other

Other

NR

Yes

Jung (2014) [54]

Multicenter

2

Double

147 (49/49/49)

Parallel group

Herbal medicine

Placebo

Anxiety disorder

Other

8 weeks

4

Yes

Kim (2018) [55]

Multicenter

2

Double

96 (32/32/32)

Other

Herbal medicine

Other

Functional dyspepsia

Other

8 weeks

1

Yes

Kim (2018) a [56]

Multicenter

2

Double

96 (64/32)

Parallel group

Herbal medicine

Placebo

Functional dyspepsia

Other

8 weeks

2

Yes

Kwon (2019) [57]

Single-center

1

Open

24 (12/12)

Crossover

Herbal medicine

Healthy male volunteers

Other

Other

1

NR

Park (2013) [58]

Single-center

1

Double

53 (13/14/14/12)

Other

Herbal medicine

Other

Diarrhea-dominant irritable bowel syndrome

Other

8 weeks

1

Yes

Kwon (2018) [59]

Single-center

1

Open

28 (14/14)

Crossover

Moxibustion

Overactive bladder

Other

4 weeks

8–12

NR

Kim (2012) [60]

Single-center

1

Open

44 (11/11/11/11)

Other

Other

Other

Acne vulgaris

Other

4 weeks

8

NR

  1. C control group, NR not reported, T treatment group