{
  "id": 167229,
  "title": "Negative Value of weeks",
  "url": "/competitions/osic-pulmonary-fibrosis-progression/discussion/167229",
  "author_name": "",
  "post_date": "2020-07-15T17:11:56.593487400Z",
  "votes": 4,
  "comment_count": 5,
  "views": 0,
  "content": "<p>can anyone please explain what does the negative values in the weeks' columns means</p>",
  "messages": [
    {
      "id": "930727",
      "postDate": "07/15/2020 17:11:56",
      "content": "<p>can anyone please explain what does the negative values in the weeks' columns means</p>",
      "rawMarkdown": "can anyone please explain what does the negative values in the weeks' columns means",
      "votes": null
    },
    {
      "id": "930735",
      "postDate": "07/15/2020 17:18:53",
      "content": "<p>The time when the CT was taken is arbitrarily assigned as Week 0. So it just means a measurement occuring prior to the CT.</p>",
      "rawMarkdown": "The time when the CT was taken is arbitrarily assigned as Week 0. So it just means a measurement occuring prior to the CT.",
      "votes": null
    },
    {
      "id": "930737",
      "postDate": "07/15/2020 17:19:25",
      "content": "<p>We assume that the week when the CT scan has been taken is week 0. So, positive week value in the CSV file indicates that this FVC has been recorded <strong>after</strong> the CT scan. Negative values mean that this FVC has been recorded <strong>before</strong> the scan. For example: a week value of -2 means that the corresponding FVC value has been recorded two weeks before the CT scan. Hope that helps.</p>",
      "rawMarkdown": "We assume that the week when the CT scan has been taken is week 0. So, positive week value in the CSV file indicates that this FVC has been recorded **after** the CT scan. Negative values mean that this FVC has been recorded **before** the scan. For example: a week value of -2 means that the corresponding FVC value has been recorded two weeks before the CT scan. Hope that helps.",
      "votes": null
    },
    {
      "id": "981180",
      "postDate": "08/22/2020 08:44:17",
      "content": "<p><a href=\"https://www.kaggle.com/ahmedhshahin\" target=\"_blank\">@ahmedhshahin</a> </p>\n<p>thank you,</p>\n<p>but in train data, we are missing week == 0 for some patients</p>",
      "rawMarkdown": "ahmedhshahin \n\nthank you,\n\nbut in train data, we are missing week == 0 for some patients",
      "votes": null
    },
    {
      "id": "988737",
      "postDate": "08/28/2020 08:35:49",
      "content": "<p>Hey <a href=\"https://www.kaggle.com/gopidurgaprasad\" target=\"_blank\">@gopidurgaprasad</a> ,</p>\n<p>Did you find the answer for missing week 0 for a patient's record? Is that turned to be really important?</p>",
      "rawMarkdown": "Hey @gopidurgaprasad ,\n\nDid you find the answer for missing week 0 for a patient's record? Is that turned to be really important?",
      "votes": null
    },
    {
      "id": "988900",
      "postDate": "08/28/2020 11:46:27",
      "content": "<p>That just means there is not an FVC measurement the week the CT scan was done. </p>",
      "rawMarkdown": "That just means there is not an FVC measurement the week the CT scan was done.",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 930735,
      "author_name": "jjinho",
      "author_url": "",
      "post_date": "07/15/2020 17:18:53",
      "content": "<p>The time when the CT was taken is arbitrarily assigned as Week 0. So it just means a measurement occuring prior to the CT.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 930737,
      "author_name": "ahmedhshahin",
      "author_url": "",
      "post_date": "07/15/2020 17:19:25",
      "content": "<p>We assume that the week when the CT scan has been taken is week 0. So, positive week value in the CSV file indicates that this FVC has been recorded <strong>after</strong> the CT scan. Negative values mean that this FVC has been recorded <strong>before</strong> the scan. For example: a week value of -2 means that the corresponding FVC value has been recorded two weeks before the CT scan. Hope that helps.</p>",
      "votes": null,
      "replies": [
        {
          "id": 981180,
          "author_name": "gopidurgaprasad",
          "author_url": "",
          "post_date": "08/22/2020 08:44:17",
          "content": "<p><a href=\"https://www.kaggle.com/ahmedhshahin\" target=\"_blank\">@ahmedhshahin</a> </p>\n<p>thank you,</p>\n<p>but in train data, we are missing week == 0 for some patients</p>",
          "votes": null,
          "replies": [
            {
              "id": 988900,
              "author_name": "richardepstein",
              "author_url": "",
              "post_date": "08/28/2020 11:46:27",
              "content": "<p>That just means there is not an FVC measurement the week the CT scan was done. </p>",
              "votes": null,
              "replies": []
            }
          ]
        },
        {
          "id": 988737,
          "author_name": "digala9949",
          "author_url": "",
          "post_date": "08/28/2020 08:35:49",
          "content": "<p>Hey <a href=\"https://www.kaggle.com/gopidurgaprasad\" target=\"_blank\">@gopidurgaprasad</a> ,</p>\n<p>Did you find the answer for missing week 0 for a patient's record? Is that turned to be really important?</p>",
          "votes": null,
          "replies": []
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "930727": "can anyone please explain what does the negative values in the weeks' columns means",
    "930735": "The time when the CT was taken is arbitrarily assigned as Week 0. So it just means a measurement occuring prior to the CT.",
    "930737": "We assume that the week when the CT scan has been taken is week 0. So, positive week value in the CSV file indicates that this FVC has been recorded **after** the CT scan. Negative values mean that this FVC has been recorded **before** the scan. For example: a week value of -2 means that the corresponding FVC value has been recorded two weeks before the CT scan. Hope that helps.",
    "981180": "ahmedhshahin \n\nthank you,\n\nbut in train data, we are missing week == 0 for some patients",
    "988737": "Hey @gopidurgaprasad ,\n\nDid you find the answer for missing week 0 for a patient's record? Is that turned to be really important?",
    "988900": "That just means there is not an FVC measurement the week the CT scan was done."
  },
  "source": "meta"
}