. 2018 Feb;53(2):144–159. doi: 10.4085/1062-6050-334-16

Table 1B. .

Between-Groups Comparisons and Cohen d Effect Sizes of Frontal-Plane Hip-Joint Angles

Study	Task	ACL Reconstruction Sample Size	Comparison Group Sample Size	Mean ± SD			Landing Phase	Cohen d Effect Size (95% CI)	Weighted Effect Size
Study	Task	ACL Reconstruction Sample Size	Comparison Group Sample Size	ACL Reconstruction-Limb Hip-Adduction Angle	ACL Contralateral-Limb Hip-Adduction Angle	Healthy Hip-Adduction Angle	Landing Phase	Cohen d Effect Size (95% CI)	Weighted Effect Size
Goerger et al⁵⁵ (2014)	Double-limb landing	12	20	0.02 ± 9.6	NA	−6.8 ± 9.5	Initial contact	0.71 (−0.03, 1.45)	5.05
Delahunt et al⁵¹ (2012)	Double-limb landing	13	16	5.2 ± 5.0	NA	−0.4 ± 4.8	Joint excursion	1.15 (0.36, 1.93)	7.12
Combined pooled effect size (95% CI)									0.91 (0.37, 1.45)
Ortiz et al⁶⁰ (2008)	Single	14	15	4.1 ± 4.4	NA	4.3 ± 5.0	Peak	−0.05 (−0.78, 0.68)	−0.36
Webster et al⁶⁷ (2012)	Single	15	11	10.3 ± 3.9	NA	11.5 ± 3.8	Peak	0.31 (−0.48, 1.09)	1.92
Delahunt et al⁵² (2012)	Single	14	14	5.0 ± 6.0	NA	9.0 ± 5.8	Joint excursion	−0.67 (−1.43, 0.08)	−4.59
Combined pooled effect size (95% CI)									−0.14 (−0.69, 0.40)

Abbreviations: ACL, anterior cruciate ligament; CI, confidence interval; NA, not applicable; single, single-limb landing.