Document (#43461)

Author

Zhang, Y.
Trace, C.B.

Title

¬The quality of health and wellness self-tracking data : a consumer perspective

Source

Journal of the Association for Information Science and Technology. 73(2022) no.6, S.879-891

Year

2022

Abstract

Information quality (IQ) is key to users' satisfaction with information systems. Understanding what IQ means to users can effectively inform system improvement. Existing inquiries into self-tracking data quality primarily focus on accuracy. Interviewing 20 consumers who had self-tracked health indicators for at least 6 months, we identified eight dimensions that consumers apply to evaluate self-tracking data quality: value-added, accuracy, completeness, accessibility, ease of understanding, trustworthiness, aesthetics, and invasiveness. These dimensions fell into four categories-intrinsic, contextual, representational, and accessibility-suggesting that consumers judge self-tracking data quality not only based on the data's inherent quality but also considering tasks at hand, the clarity of data representation, and data accessibility. We also found that consumers' self-tracking data quality judgments are shaped primarily by their goals or motivations, subjective experience with tracked activities, mental models of how systems work, self-tracking tools' reputation, cost, and design, and domain knowledge and intuition, but less by more objective criteria such as scientific research results, validated devices, or consultation with experts. Future studies should develop and validate a scale for measuring consumers' perceptions of self-tracking data quality and commit efforts to develop technologies and training materials to enhance consumers' ability to evaluate data quality.

Content

Vgl.: https://asistdl.onlinelibrary.wiley.com/doi/10.1002/asi.24591.

Similar documents (author)

1. Trace, C.B.; Zhang, Y.; Yi, S.; Williams-Brown, M.Y.: Information practices around genetic testing for ovarian cancer patients (2023) 3.56

   3.559588 = sum of:
     3.559588 = sum of:
       0.81023633 = weight(author_txt:zhang in 2073) [ClassicSimilarity], result of:
         0.81023633 = score(doc=2073,freq=1.0), product of:
           0.40491885 = queryWeight, product of:
             6.40315 = idf(docFreq=199, maxDocs=44421)
             0.06323744 = queryNorm
           2.0009844 = fieldWeight in 2073, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             6.40315 = idf(docFreq=199, maxDocs=44421)
             0.3125 = fieldNorm(doc=2073)
       2.7493515 = weight(author_txt:trace in 2073) [ClassicSimilarity], result of:
         2.7493515 = score(doc=2073,freq=1.0), product of:
           0.91435266 = queryWeight, product of:
             1.502702 = boost
             9.622026 = idf(docFreq=7, maxDocs=44421)
             0.06323744 = queryNorm
           3.0068831 = fieldWeight in 2073, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.622026 = idf(docFreq=7, maxDocs=44421)
             0.3125 = fieldNorm(doc=2073)
   

2. Trace, C.B.: Information creation and the notion of membership (2007) 2.75

   2.7493515 = sum of:
     2.7493515 = product of:
       5.498703 = sum of:
         5.498703 = weight(author_txt:trace in 1825) [ClassicSimilarity], result of:
           5.498703 = score(doc=1825,freq=1.0), product of:
             0.91435266 = queryWeight, product of:
               1.502702 = boost
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.06323744 = queryNorm
             6.0137663 = fieldWeight in 1825, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.625 = fieldNorm(doc=1825)
       0.5 = coord(1/2)
   

3. Trace, C.B.: Resistance and the underlife : informal written literacies and their relationship to human information behavior (2008) 2.75

   2.7493515 = sum of:
     2.7493515 = product of:
       5.498703 = sum of:
         5.498703 = weight(author_txt:trace in 3000) [ClassicSimilarity], result of:
           5.498703 = score(doc=3000,freq=1.0), product of:
             0.91435266 = queryWeight, product of:
               1.502702 = boost
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.06323744 = queryNorm
             6.0137663 = fieldWeight in 3000, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.625 = fieldNorm(doc=3000)
       0.5 = coord(1/2)
   

4. Lee, C.P.; Trace, C.B.: ¬The role of information in a community of hobbyist collectors (2009) 2.20

   2.1994812 = sum of:
     2.1994812 = product of:
       4.3989625 = sum of:
         4.3989625 = weight(author_txt:trace in 3744) [ClassicSimilarity], result of:
           4.3989625 = score(doc=3744,freq=1.0), product of:
             0.91435266 = queryWeight, product of:
               1.502702 = boost
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.06323744 = queryNorm
             4.811013 = fieldWeight in 3744, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.5 = fieldNorm(doc=3744)
       0.5 = coord(1/2)
   

5. Trace, C.B.; Karadkar, U.P.: Information management in the humanities : scholarly processes, tools, and the construction of personal collections (2017) 2.20

   2.1994812 = sum of:
     2.1994812 = product of:
       4.3989625 = sum of:
         4.3989625 = weight(author_txt:trace in 4358) [ClassicSimilarity], result of:
           4.3989625 = score(doc=4358,freq=1.0), product of:
             0.91435266 = queryWeight, product of:
               1.502702 = boost
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.06323744 = queryNorm
             4.811013 = fieldWeight in 4358, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.5 = fieldNorm(doc=4358)
       0.5 = coord(1/2)
   

Similar documents (content)

1. Stvilia, B.; Mon, L.; Yi, Y.J.: ¬A model for online consumer health information quality (2009) 0.17

   0.17401482 = sum of:
     0.17401482 = product of:
       0.7250618 = sum of:
         0.032902483 = weight(abstract_txt:develop in 79) [ClassicSimilarity], result of:
           0.032902483 = score(doc=79,freq=2.0), product of:
             0.07397682 = queryWeight, product of:
               1.29529 = boost
               5.0319695 = idf(docFreq=787, maxDocs=44421)
               0.011349863 = queryNorm
             0.44476748 = fieldWeight in 79, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.0319695 = idf(docFreq=787, maxDocs=44421)
               0.0625 = fieldNorm(doc=79)
         0.027436048 = weight(abstract_txt:evaluate in 79) [ClassicSimilarity], result of:
           0.027436048 = score(doc=79,freq=1.0), product of:
             0.082572274 = queryWeight, product of:
               1.3684732 = boost
               5.316273 = idf(docFreq=592, maxDocs=44421)
               0.011349863 = queryNorm
             0.33226708 = fieldWeight in 79, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.316273 = idf(docFreq=592, maxDocs=44421)
               0.0625 = fieldNorm(doc=79)
         0.06983776 = weight(abstract_txt:health in 79) [ClassicSimilarity], result of:
           0.06983776 = score(doc=79,freq=4.0), product of:
             0.09697506 = queryWeight, product of:
               1.4830275 = boost
               5.7612963 = idf(docFreq=379, maxDocs=44421)
               0.011349863 = queryNorm
             0.72016203 = fieldWeight in 79, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.7612963 = idf(docFreq=379, maxDocs=44421)
               0.0625 = fieldNorm(doc=79)
         0.03034821 = weight(abstract_txt:data in 79) [ClassicSimilarity], result of:
           0.03034821 = score(doc=79,freq=1.0), product of:
             0.14580736 = queryWeight, product of:
               3.8575819 = boost
               3.3302255 = idf(docFreq=4320, maxDocs=44421)
               0.011349863 = queryNorm
             0.20813909 = fieldWeight in 79, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3302255 = idf(docFreq=4320, maxDocs=44421)
               0.0625 = fieldNorm(doc=79)
         0.20164397 = weight(abstract_txt:quality in 79) [ClassicSimilarity], result of:
           0.20164397 = score(doc=79,freq=6.0), product of:
             0.28359404 = queryWeight, product of:
               5.3798976 = boost
               4.6444306 = idf(docFreq=1160, maxDocs=44421)
               0.011349863 = queryNorm
             0.71103036 = fieldWeight in 79, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               4.6444306 = idf(docFreq=1160, maxDocs=44421)
               0.0625 = fieldNorm(doc=79)
         0.3628933 = weight(abstract_txt:consumers in 79) [ClassicSimilarity], result of:
           0.3628933 = score(doc=79,freq=3.0), product of:
             0.46181977 = queryWeight, product of:
               5.605522 = boost
               7.2588162 = idf(docFreq=84, maxDocs=44421)
               0.011349863 = queryNorm
             0.7857899 = fieldWeight in 79, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               7.2588162 = idf(docFreq=84, maxDocs=44421)
               0.0625 = fieldNorm(doc=79)
       0.24 = coord(6/25)
   

2. Zhang, Y.; Sun, Y.; Xie, B.: Quality of health information for consumers on the web : a systematic review of indicators, criteria, tools, and evaluation results (2015) 0.15

   0.1484824 = sum of:
     0.1484824 = product of:
       0.61867666 = sum of:
         0.042822562 = weight(abstract_txt:completeness in 3218) [ClassicSimilarity], result of:
           0.042822562 = score(doc=3218,freq=1.0), product of:
             0.08818437 = queryWeight, product of:
               7.769642 = idf(docFreq=50, maxDocs=44421)
               0.011349863 = queryNorm
             0.48560262 = fieldWeight in 3218, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.769642 = idf(docFreq=50, maxDocs=44421)
               0.0625 = fieldNorm(doc=3218)
         0.01685233 = weight(abstract_txt:understanding in 3218) [ClassicSimilarity], result of:
           0.01685233 = score(doc=3218,freq=1.0), product of:
             0.059665944 = queryWeight, product of:
               1.1632751 = boost
               4.5191154 = idf(docFreq=1315, maxDocs=44421)
               0.011349863 = queryNorm
             0.28244472 = fieldWeight in 3218, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.5191154 = idf(docFreq=1315, maxDocs=44421)
               0.0625 = fieldNorm(doc=3218)
         0.07808099 = weight(abstract_txt:health in 3218) [ClassicSimilarity], result of:
           0.07808099 = score(doc=3218,freq=5.0), product of:
             0.09697506 = queryWeight, product of:
               1.4830275 = boost
               5.7612963 = idf(docFreq=379, maxDocs=44421)
               0.011349863 = queryNorm
             0.80516565 = fieldWeight in 3218, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               5.7612963 = idf(docFreq=379, maxDocs=44421)
               0.0625 = fieldNorm(doc=3218)
         0.038565844 = weight(abstract_txt:accuracy in 3218) [ClassicSimilarity], result of:
           0.038565844 = score(doc=3218,freq=1.0), product of:
             0.10361479 = queryWeight, product of:
               1.5329573 = boost
               5.9552646 = idf(docFreq=312, maxDocs=44421)
               0.011349863 = queryNorm
             0.37220404 = fieldWeight in 3218, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.9552646 = idf(docFreq=312, maxDocs=44421)
               0.0625 = fieldNorm(doc=3218)
         0.23283839 = weight(abstract_txt:quality in 3218) [ClassicSimilarity], result of:
           0.23283839 = score(doc=3218,freq=8.0), product of:
             0.28359404 = queryWeight, product of:
               5.3798976 = boost
               4.6444306 = idf(docFreq=1160, maxDocs=44421)
               0.011349863 = queryNorm
             0.8210271 = fieldWeight in 3218, product of:
               2.828427 = tf(freq=8.0), with freq of:
                 8.0 = termFreq=8.0
               4.6444306 = idf(docFreq=1160, maxDocs=44421)
               0.0625 = fieldNorm(doc=3218)
         0.20951656 = weight(abstract_txt:consumers in 3218) [ClassicSimilarity], result of:
           0.20951656 = score(doc=3218,freq=1.0), product of:
             0.46181977 = queryWeight, product of:
               5.605522 = boost
               7.2588162 = idf(docFreq=84, maxDocs=44421)
               0.011349863 = queryNorm
             0.45367602 = fieldWeight in 3218, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.2588162 = idf(docFreq=84, maxDocs=44421)
               0.0625 = fieldNorm(doc=3218)
       0.24 = coord(6/25)
   

3. Zhang, Y.: Beyond quality and accessibility : source selection in consumer health information searching (2014) 0.12

   0.123817876 = sum of:
     0.123817876 = product of:
       0.61908937 = sum of:
         0.023832794 = weight(abstract_txt:understanding in 2252) [ClassicSimilarity], result of:
           0.023832794 = score(doc=2252,freq=2.0), product of:
             0.059665944 = queryWeight, product of:
               1.1632751 = boost
               4.5191154 = idf(docFreq=1315, maxDocs=44421)
               0.011349863 = queryNorm
             0.39943713 = fieldWeight in 2252, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.5191154 = idf(docFreq=1315, maxDocs=44421)
               0.0625 = fieldNorm(doc=2252)
         0.06983776 = weight(abstract_txt:health in 2252) [ClassicSimilarity], result of:
           0.06983776 = score(doc=2252,freq=4.0), product of:
             0.09697506 = queryWeight, product of:
               1.4830275 = boost
               5.7612963 = idf(docFreq=379, maxDocs=44421)
               0.011349863 = queryNorm
             0.72016203 = fieldWeight in 2252, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.7612963 = idf(docFreq=379, maxDocs=44421)
               0.0625 = fieldNorm(doc=2252)
         0.11269844 = weight(abstract_txt:accessibility in 2252) [ClassicSimilarity], result of:
           0.11269844 = score(doc=2252,freq=2.0), product of:
             0.19242088 = queryWeight, product of:
               2.5585325 = boost
               6.6262937 = idf(docFreq=159, maxDocs=44421)
               0.011349863 = queryNorm
             0.58568716 = fieldWeight in 2252, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.6262937 = idf(docFreq=159, maxDocs=44421)
               0.0625 = fieldNorm(doc=2252)
         0.116419196 = weight(abstract_txt:quality in 2252) [ClassicSimilarity], result of:
           0.116419196 = score(doc=2252,freq=2.0), product of:
             0.28359404 = queryWeight, product of:
               5.3798976 = boost
               4.6444306 = idf(docFreq=1160, maxDocs=44421)
               0.011349863 = queryNorm
             0.41051355 = fieldWeight in 2252, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.6444306 = idf(docFreq=1160, maxDocs=44421)
               0.0625 = fieldNorm(doc=2252)
         0.29630116 = weight(abstract_txt:consumers in 2252) [ClassicSimilarity], result of:
           0.29630116 = score(doc=2252,freq=2.0), product of:
             0.46181977 = queryWeight, product of:
               5.605522 = boost
               7.2588162 = idf(docFreq=84, maxDocs=44421)
               0.011349863 = queryNorm
             0.64159477 = fieldWeight in 2252, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.2588162 = idf(docFreq=84, maxDocs=44421)
               0.0625 = fieldNorm(doc=2252)
       0.2 = coord(5/25)
   

4. Jascó, P.: Content evaluation of databases (1997) 0.12

   0.116005175 = sum of:
     0.116005175 = product of:
       0.4143042 = sum of:
         0.06056025 = weight(abstract_txt:completeness in 3299) [ClassicSimilarity], result of:
           0.06056025 = score(doc=3299,freq=2.0), product of:
             0.08818437 = queryWeight, product of:
               7.769642 = idf(docFreq=50, maxDocs=44421)
               0.011349863 = queryNorm
             0.6867458 = fieldWeight in 3299, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.769642 = idf(docFreq=50, maxDocs=44421)
               0.0625 = fieldNorm(doc=3299)
         0.045310333 = weight(abstract_txt:judge in 3299) [ClassicSimilarity], result of:
           0.045310333 = score(doc=3299,freq=1.0), product of:
             0.0915675 = queryWeight, product of:
               1.0190016 = boost
               7.917278 = idf(docFreq=43, maxDocs=44421)
               0.011349863 = queryNorm
             0.49482986 = fieldWeight in 3299, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.917278 = idf(docFreq=43, maxDocs=44421)
               0.0625 = fieldNorm(doc=3299)
         0.027436048 = weight(abstract_txt:evaluate in 3299) [ClassicSimilarity], result of:
           0.027436048 = score(doc=3299,freq=1.0), product of:
             0.082572274 = queryWeight, product of:
               1.3684732 = boost
               5.316273 = idf(docFreq=592, maxDocs=44421)
               0.011349863 = queryNorm
             0.33226708 = fieldWeight in 3299, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.316273 = idf(docFreq=592, maxDocs=44421)
               0.0625 = fieldNorm(doc=3299)
         0.05454034 = weight(abstract_txt:accuracy in 3299) [ClassicSimilarity], result of:
           0.05454034 = score(doc=3299,freq=2.0), product of:
             0.10361479 = queryWeight, product of:
               1.5329573 = boost
               5.9552646 = idf(docFreq=312, maxDocs=44421)
               0.011349863 = queryNorm
             0.526376 = fieldWeight in 3299, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.9552646 = idf(docFreq=312, maxDocs=44421)
               0.0625 = fieldNorm(doc=3299)
         0.07968983 = weight(abstract_txt:accessibility in 3299) [ClassicSimilarity], result of:
           0.07968983 = score(doc=3299,freq=1.0), product of:
             0.19242088 = queryWeight, product of:
               2.5585325 = boost
               6.6262937 = idf(docFreq=159, maxDocs=44421)
               0.011349863 = queryNorm
             0.41414335 = fieldWeight in 3299, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.6262937 = idf(docFreq=159, maxDocs=44421)
               0.0625 = fieldNorm(doc=3299)
         0.03034821 = weight(abstract_txt:data in 3299) [ClassicSimilarity], result of:
           0.03034821 = score(doc=3299,freq=1.0), product of:
             0.14580736 = queryWeight, product of:
               3.8575819 = boost
               3.3302255 = idf(docFreq=4320, maxDocs=44421)
               0.011349863 = queryNorm
             0.20813909 = fieldWeight in 3299, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3302255 = idf(docFreq=4320, maxDocs=44421)
               0.0625 = fieldNorm(doc=3299)
         0.116419196 = weight(abstract_txt:quality in 3299) [ClassicSimilarity], result of:
           0.116419196 = score(doc=3299,freq=2.0), product of:
             0.28359404 = queryWeight, product of:
               5.3798976 = boost
               4.6444306 = idf(docFreq=1160, maxDocs=44421)
               0.011349863 = queryNorm
             0.41051355 = fieldWeight in 3299, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.6444306 = idf(docFreq=1160, maxDocs=44421)
               0.0625 = fieldNorm(doc=3299)
       0.28 = coord(7/25)
   

5. Faniel, I.M.; Kriesberg, A.; Yakel, E.: Social scientists' satisfaction with data reuse (2016) 0.10

   0.10296663 = sum of:
     0.10296663 = product of:
       0.51483315 = sum of:
         0.0535282 = weight(abstract_txt:completeness in 3931) [ClassicSimilarity], result of:
           0.0535282 = score(doc=3931,freq=1.0), product of:
             0.08818437 = queryWeight, product of:
               7.769642 = idf(docFreq=50, maxDocs=44421)
               0.011349863 = queryNorm
             0.6070033 = fieldWeight in 3931, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.769642 = idf(docFreq=50, maxDocs=44421)
               0.078125 = fieldNorm(doc=3931)
         0.069657095 = weight(abstract_txt:trustworthiness in 3931) [ClassicSimilarity], result of:
           0.069657095 = score(doc=3931,freq=1.0), product of:
             0.10511066 = queryWeight, product of:
               1.091761 = boost
               8.482592 = idf(docFreq=24, maxDocs=44421)
               0.011349863 = queryNorm
             0.66270244 = fieldWeight in 3931, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.482592 = idf(docFreq=24, maxDocs=44421)
               0.078125 = fieldNorm(doc=3931)
         0.099612296 = weight(abstract_txt:accessibility in 3931) [ClassicSimilarity], result of:
           0.099612296 = score(doc=3931,freq=1.0), product of:
             0.19242088 = queryWeight, product of:
               2.5585325 = boost
               6.6262937 = idf(docFreq=159, maxDocs=44421)
               0.011349863 = queryNorm
             0.5176792 = fieldWeight in 3931, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.6262937 = idf(docFreq=159, maxDocs=44421)
               0.078125 = fieldNorm(doc=3931)
         0.11380579 = weight(abstract_txt:data in 3931) [ClassicSimilarity], result of:
           0.11380579 = score(doc=3931,freq=9.0), product of:
             0.14580736 = queryWeight, product of:
               3.8575819 = boost
               3.3302255 = idf(docFreq=4320, maxDocs=44421)
               0.011349863 = queryNorm
             0.78052163 = fieldWeight in 3931, product of:
               3.0 = tf(freq=9.0), with freq of:
                 9.0 = termFreq=9.0
               3.3302255 = idf(docFreq=4320, maxDocs=44421)
               0.078125 = fieldNorm(doc=3931)
         0.17822976 = weight(abstract_txt:quality in 3931) [ClassicSimilarity], result of:
           0.17822976 = score(doc=3931,freq=3.0), product of:
             0.28359404 = queryWeight, product of:
               5.3798976 = boost
               4.6444306 = idf(docFreq=1160, maxDocs=44421)
               0.011349863 = queryNorm
             0.6284679 = fieldWeight in 3931, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.6444306 = idf(docFreq=1160, maxDocs=44421)
               0.078125 = fieldNorm(doc=3931)
       0.2 = coord(5/25)