Table 3.

Primary study endpoints by treatment group.

	Acupuncture intervention N = 28	Lifestyle only intervention N = 28	p value	Adjusted analysis	RR/CI (CI 95%)
Increase in fertility awareness (%)	19 (86.4)	8 (40)	0.002∗	0.011∗	2.38 (1.25, 4.50)
Regularity of cycle n (%)
At entry (%) n = 56	20 (71.4)	20 (71.4)
M1 n = 43	16 (61.5)	12 (70.6)	0.543	0.823	0.87 (0.57, 1.34)
M2 n = 31	12 (60)	5 (45.5)	0.436	0.262	1.32 (0.63, 2.77)
M3 n = 15	5 (71.4)	4 (50)	0.398	0.252	1.43 (0.65, 3.30)
Menstrual details (mean/SD)
Length of period
M entry n = 56	4.86 (2.3)	4.85 (1.5)	0.984
M1 n = 36	5.39 (2.5)	5.08 (1.1)	0.671	0.383	0.31 (−1.18, 1.8)
M2 n = 30	5.11 (2.0)	4.33 (1.4)	0.255	0.631	0.78 (−0.77, 2.33)
M3 n = 18	5.11 (1.3)	4.67 (1.3)	0.478	0.452	0.44 (−0.85, 1.73)
M exit n = 39	4.52 (2.2)	4.72 (2.2)	0.783	0.764	−0.2 (−1.65, 1.25)
Length of cycle
M entry n = 56	34.64 (18.3)	35.43 (18.4)	0.873
M1 n = 34	32.52 (13.9)	31.00 (6.2)	0.713	0.360	1.52 (−6.8, 9.84)
M2 n = 29	29.12 (4.0)	29.25 (8.9)	0.957	0.802	−0.13 (−5.15, 4.89)
M3 n = 16	29.43 (2.6)	26.78 (3.1)	0.091	0.996	2.65 (−0.48, 5.78)
M exit n = 37	29.05 (11.9)	30.65 (6.4)	0.624	0.285	−1.6 (−8.15, 4.95)
Nature of menstrual flow (%)
Heavy			Chi-square  M entry 0.716  M1 0.077  M2 0.009∗  M3 0.819
M entry n = 56	11 (39.3)	12 (42.9)			0.92 (0.49, 1.72)
M1 n = 41	11 (44)	2 (12.5)			3.52 (0.89, 13.85)
M2 n = 29	11 (55)	1 (11.1)			4.95 (0.75, 32.76)
M3 n = 14	2 (28.6)	2 (28.6)			1 (0.19, 5.25)
Moderate
M entry n = 56	9 (32.1)	11 (39.3)			0.82 (0.4, 1.66)
M1 n = 41	10 (40)	8 (50)			0.8 (0.4, 1.59)
M2 n = 29	6 (30)	3 (33.3)			0.9 (0.29, 2.82)
M3 n = 14	3 (42.9)	2 (28.6)			1.5 (0.35, 6.4)
Light
M entry n = 56	5 (17.9)	4 (14.3)			1.25 (0.37, 4.17)
M1 n = 41	4 (16)	6 (37.5)			0.43 (0.14, 1.28)
M2 n = 29	1 (5)	5 (55.6)			0.09 (0.01, 0.66)
M3 n = 14	2 (28.6)	3 (42.9)			0.67 (0.16, 2.84)
Inconsistent
M entry n = 56	3 (10.7)	1 (3.6)			3 (0.33, 27.12)
M1 n = 41	0	0
M2 n = 29	2 (10)	0
M3 n = 14	0	0

∗ indicates possible statistical significance, for example, p < 0.05.