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. 2015 Feb 18;2015(2):CD007989. doi: 10.1002/14651858.CD007989.pub2

2. Bradford 1993 (Table VII, Sexual activity, p 397).

Effect Phase Chi rank Cases (n) Friedmann 2‐way ANOVA Chi2
Nocturnal emissions B
 A
 P 2.30
1.77
1.93		 15 2.2333 (df = 2)
Spontaneous morning erections B
 A
 P 2.38
1.66
1.97		 16 4.1563 (df = 2)
Spontaneous ejaculation B
 A
 P 2.03
1.88
2.09		 16 0.4063 (df = 2)
Masturbation B
 A
 P 2.47
1.44
2.09		 16 8.7188 (df = 2, P value < 0.05)
Coitus B
 A
 P 1.94
2.09
1.97		 16 0.2188 (df = 2)
Homosexual activity B
 A
 P 1.91
2.03
2.06		 16 0.2188 (df = 2)
Homosexual change of partner B
 A
 P 1.91
2.03
2.06		 16 0.2188 (df = 2)
Abnormal sexual activity B
 A
 P 2.09
2.03
1.88		 16 0.4063 (df = 2)

B ‐ baseline
 A ‐ active
 P ‐ placebo
 df ‐ degrees of freedom
 n ‐ number of participants

Non‐significant effects except otherwise indicated.