Two studies (37)(38) reported a mean ingestion between participants of two or more AlP tablets, and treating these as a subgroup of the main analysis (analysis 2., outcome: mortality) gives an RR of 0.79 (95% CI of 0.63 to 1.00), shown in Figure 13 . Likewise, the two remaining trials (42)(43), which reported lower amounts, give an RR of 0.86 (95% CI of 0.69 to 1.13).