What do systematic reviews say?

Fewer‐than‐four ports vs four ports

• Fewer‐than‐four ports versus four ports for laparoscopic cholecystectomy 2014 · Cochrane Headline outcomes only
  no estimate extracted
  7 studies · 634 participants
  Very low

Fewer‐than‐four ports vs four ports

• Fewer‐than‐four ports versus four ports for laparoscopic cholecystectomy 2014 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 317 participants
  Very low

Fewer‐than‐four ports vs four ports

It is very uncertain whether fewer‐than‐four ports changes serious adverse events compared with four ports (very low certainty).

• Fewer‐than‐four ports versus four ports for laparoscopic cholecystectomy 2014 · Cochrane Headline outcomes only
  RR 3.93 [0.86, 18.04]
  7 studies · 634 participants
  Very low

Fewer‐than‐four ports vs four ports

• Fewer‐than‐four ports versus four ports for laparoscopic cholecystectomy 2014 · Cochrane Headline outcomes only
  no estimate extracted
  4 studies · 510 participants
  Very low

Fewer‐than‐four ports vs four ports

It is very uncertain whether fewer‐than‐four ports changes conversion to open cholecystectomy compared with four ports (very low certainty).

• Fewer‐than‐four ports versus four ports for laparoscopic cholecystectomy 2014 · Cochrane Headline outcomes only
  RR 0.68 [0.19, 2.35]
  5 studies · 581 participants
  Very low

Fewer‐than‐four ports vs four ports

• Fewer‐than‐four ports versus four ports for laparoscopic cholecystectomy 2014 · Cochrane Headline outcomes only
  no estimate extracted
  9 studies · 855 participants
  Very low

Fewer‐than‐four ports vs four ports

• Fewer‐than‐four ports versus four ports for laparoscopic cholecystectomy 2014 · Cochrane Headline outcomes only
  no estimate extracted
  6 studies · 731 participants
  Very low

Fewer‐than‐four ports vs four ports

It is very uncertain whether fewer‐than‐four ports changes proportion discharged as day surgery compared with four ports (very low certainty).

• Fewer‐than‐four ports versus four ports for laparoscopic cholecystectomy 2014 · Cochrane Headline outcomes only
  RR 0.92 [0.7, 1.22]
  1 study · 50 participants
  Very low

Fewer‐than‐four ports vs four ports

• Fewer‐than‐four ports versus four ports for laparoscopic cholecystectomy 2014 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 325 participants
  Very low

Fewer‐than‐four ports vs four ports

• Fewer‐than‐four ports versus four ports for laparoscopic cholecystectomy 2014 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 150 participants
  Very low