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. 2022 Jul 20;6(7):e37720. doi: 10.2196/37720

Table 2.

Resistance to using the COVID-19 Contact-Confirming Application under various conditions when functions are added to the current version (N=1058).

Condition and response option Function A (responses), n (%) Function B (responses), n (%) Function C (responses), n (%)
Feature addition only

No resistance to use 141 (13.5) 123 (11.9) 124 (12)

Not much resistance to use 282 (27.1) 251 (24.2) 243 (23.4)

Some resistance to use 334 (32.1) 337 (32.5) 321 (31)

Significant resistance to use 164 (15.7) 187 (18.1) 206 (19.9)

Absolutely opposed to use 121 (11.6) 138 (13.3) 142 (13.7)
A function is added, thereby halving the spread of infections

No resistance to use 140 (13.4) 118 (11.3) 120 (11.5)

Not much resistance to use 304 (29.1) 259 (24.9) 256 (24.7)

Some resistance to use 339 (32.5) 369 (35.5) 354 (34.1)

Significant resistance to use 152 (14.6) 168 (16.1) 180 (17.3)

Absolutely opposed to use 108 (10.4) 127 (12.2) 129 (12.4)
Feature additions mean reduced charges for device use

Would accept at a discount of about ¥200 (US $1.48) a month 112 (10.7) 83 (8.0) 88 (8.5)

Would accept at a discount of about ¥500 (US $3.70) per month 147 (14.0) 112 (10.7) 97 (9.3)

Would accept at a discount of about ¥1000 (US $7.29) per month 154 (14.7) 150 (14.4) 147 (14.1)

Would accept at a discount of about ¥2000 (US $14.78) per month 87 (8.3) 123 (11.8) 110 (10.6)

Would accept at a discount of about ¥3000 (US $22.17) per month 52 (5) 53 (5.1) 65 (6.3)

Would accept at a discount of about ¥5000 (US $36.95) per month 133 (12.7) 138 (13.2) 145 (13.9)

I would not want to use it regardless of the discount 362 (34.6) 384 (36.8) 388 (337.3)