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. 2020 Feb 17;10(2):e031804. doi: 10.1136/bmjopen-2019-031804

Table 4.

Mean improvement in SF-36 PCS and MCS scores between surgical interventions

Reference Surgical intervention Preop PCS Postop PCS ΔPCS Preop MCS Postop MCS ΔMCS N
This study Bilateral breast reduction 39.7 49.9 10.2 37.0 46.2 9.2 191
Pivec et al 44 Total knee replacement 33.0 47.8 14.8 52.9 55.9 3.0 281
Stickles et al 48 Total hip replacement 28.0 41.2 13.2 51.2 53.9 2.7 551
Muller-Nordhorn et al 47 Coronary artery bypass grafting 36.0 43.0 7.3 45.0 50.0 4.3 412
Polly et al 45 Lumbar fusion (spine) 26.6 40.0 13.4 n/a n/a n/a 1826
Rogmark et al 49 Incisional hernia repair 41.6 49.5 8.1 50.2 52.3 1.7 124
Faulconbridge et al 46 Bariatric surgery 37.7 46.4 8.7 43.1 45.5 2.4 36

Δ, mean change in SF-36 score from preoperative to 12 months postoperative; MCS, Mental Component Summary; N, number of participants; n/a, not applicable; PCS, Physical Component Summary; SF-36, Short Form-36.