Table 2.
The characteristics of included studies
| Author(s) and year | Type of study | Is using QALY in older population a main topic? | Type of problem discussed | |
|---|---|---|---|---|
| 1 | Asim & Petrou 2005 [38] | O/AR | N | QALY = QALY; Attrib |
| 2 | Avorn 1984 [17] | O/AR | N | LE; QoL; Instr |
| 3 | Baltussen et al.1996 [18] | Rev | P | LE; QoL |
| 4 | Blomqvist 2002 [42] | R | N | Instr |
| 5 | Brouwer et al. 2005 [39] | R(S) | N | QALY = QALY; QoL |
| 6 | Bulamu et al. 2015 [45] | Rev | N | B-HA |
| 7 | Busschbach et al. 1993 [32] | R(S) | Y | QALY = QALY |
| 8 | Cookson & Culyer 2010 [14] | O/AR | N | LE; QoL; B-HA |
| 9 | Dey & Fraser 2017 [26] | Rev | N | LE; QALY = QALY; QoL; Instr |
| 10 | Donaldson et al. 1988 [43] | R | N | Instr |
| 11 | Franklin 2017 [41] | O/AR | N | QoL |
| 12 | Grewal et al.2006 [46] | R(S) | N | B-HA |
| 13 | Harris 1987 [27] | O/AR | N | LE |
| 14 | Hazra et al. 2018 [28] | O/AR | N | LE; QALY = QALY |
| 15 | Huter et al. 2016 [40] | O/AR | N | LE; QoL; Instr; Attrib; B-HA |
| 16 | Huter et al. 2018 [44] | Rev | N | Attrib |
| 17 | Johannesson & Johansson 1996 [29] | R(S) | N | LE; QALY = QALY |
| 18 | Johannesson & Johansson 1997 [30] | R(S) | Y | LE; QALY = QALY |
| 19 | Johri et al. 2005 [31] | R(S) | P | LE; QALY = QALY; Instr |
| 20 | Joiner 1999 [19] | O/AR | Y | LE; QALY = QALY |
| 21 | Kappel & Sandoe 1992 [20] | O/AR | P | LE; QALY = QALY; Attrib |
| 22 | Kappel & Sandoe 1994 [21] | O/AR | P | LE |
| 23 | Mendeloff 1983 [22] | O/AR | N | LE |
| 24 | Nord et al. 1996 [23] | R(S) | N | LE |
| 25 | Petrou 2014 [33] | Rev | P | QALY = QALY |
| 26 | Pettitt et al. 2016 [15] | Rev | Y | Instr |
| 27 | Rodriguez & Pinto 2000 [34] | R(S) | Y | QALY = QALY |
| 28 | Stevens et al. 2012 [25] | Rev | P | LE |
| 29 | Stolk et al. 2005 [35] | R(S) | N | QALY = QALY |
| 30 | Tsuchiya 2000 [36] | R | N | QALY = QALY; QoL |
| 31 | Tsuchiya et al. 2003 [24] | R(S); Rev | N | LE; QALY = QALY; Attrib |
| 32 | Williams 1997 [37] | O/AR | N | QALY = QALY |
Legend:
Type of study
• O/AR: authors’ opinions, also based on an argumentative review
• R(S): research based on survey
• R: other than survey research
• Rev: systematic or narrative literature review
Is using QALY in the older population a main topic?
• N: no
• P: it is one of the main topics of the study, but not the only
• Y: yes
Type of problem discussed
• Attrib.: QoL measured regardless of age, while different attributes/attribute measures are important for the older population
• B-HA: no beyond-health QoL aspects taken into account
• Instr.: problems with inadequacy of QoL measurement instrument
• LE: lower LE causes lower QALY gains
• QALY = QALY: equal value of one QALY regardless of age
• QoL: poorer average health state causes lower QALY gain