PHQ-9うつ病スケール
用途適応： screening and monitoring depressive symptoms in appropriate clinical settings.
層別Totals guide severity and follow-up intensity; diagnosis still requires clinical interview.
限界非適応： as the sole diagnostic test, or without a safety plan when item … · 落とし穴： ignoring medical mimics and bipolar screening. · Any item-9 positivity → immediate safety assessment.
出典《中国抑郁障碍防治指南》 / mental-health pathways on zh pages
当直の次の一手
スコア後：シーン連算・隣接スコア・対応パスへ。ローカル参照のみ、HIS書き込みなし。
方法論 · 代入例・ガイドライン要点・詳細
適用場面
適応： screening and monitoring depressive symptoms in appropriate clinical settings.
入力項目
- Little interest or pleasure in doing things · 選択
- Feeling down, depressed, or hopeless · 選択
- Trouble falling/staying asleep, or sleeping too much · 選択
- Feeling tired or having little energy · 選択
- Poor appetite or overeating · 選択
- Feeling bad about yourself — or that you are a failure · 選択
- Trouble concentrating on things · 選択
- Moving or speaking slowly / being fidgety or restless · 選択
- Thoughts that you would be better off dead, or of hurting yourself · 選択
計算方法と公式
Nine items scored 0–3; total 0–27. Bands: 0–4 none–minimal, 5–9 mild, 10–14 moderate, 15–19 moderately severe, 20–27 severe.
Ask about the last 2 weeks; always review item 9 for self-harm ideation.
計算例（数値代入）
以下の数値は本ツールの入力欄に定義された例示値であり、本ページの数式でサーバー側で実際に計算したものです。計算過程を素早く確認できます。代入方法の例示のみで、臨床上の助言ではなく、実在する症例でもありません。
| Little interest or pleasure in doing things | Several days (1) |
|---|---|
| Feeling down, depressed, or hopeless | Several days (1) |
| Trouble falling/staying asleep, or sleeping too much | Several days (1) |
| Feeling tired or having little energy | Several days (1) |
| Poor appetite or overeating | Several days (1) |
| Feeling bad about yourself — or that you are a failure | Several days (1) |
| Trouble concentrating on things | Several days (1) |
| Moving or speaking slowly / being fidgety or restless | Several days (1) |
| Thoughts that you would be better off dead, or of hurting yourself | Several days (1) |
→PHQ-99/27
- Severity band：Mild (5–9)
- Item 9 (self-harm thoughts)：Positive — perform safety assessment now
| Little interest or pleasure in doing things | Not at all (0) |
|---|---|
| Feeling down, depressed, or hopeless | Not at all (0) |
| Trouble falling/staying asleep, or sleeping too much | Not at all (0) |
| Feeling tired or having little energy | Not at all (0) |
| Poor appetite or overeating | Not at all (0) |
| Feeling bad about yourself — or that you are a failure | Not at all (0) |
| Trouble concentrating on things | Not at all (0) |
| Moving or speaking slowly / being fidgety or restless | Not at all (0) |
| Thoughts that you would be better off dead, or of hurting yourself | Not at all (0) |
→PHQ-90/27
- Severity band：None–minimal (0–4)
- Item 9 (self-harm thoughts)：0 — still screen clinically if concern
結果の判読と層別
Totals guide severity and follow-up intensity; diagnosis still requires clinical interview.
ガイドライン要点（独自整理）
- Public-domain instrument (Kroenke).
- Item 9 overrides numeric band for urgency.
- 次： PHQ-2 screen upstream; safety pathway; treatment monitoring.
以上は該当ガイドラインの要点を本サイトが独自に整理したものであり、原文の引用ではありません。
注意点と限界
- 非適応： as the sole diagnostic test, or without a safety plan when item 9 is positive.
- 落とし穴： ignoring medical mimics and bipolar screening.
- Any item-9 positivity → immediate safety assessment.
照合と出典 · 検証可能なガバナンス
参考ガイドラインと出典
- [ガイドライン / 主要出典]《中国抑郁障碍防治指南》 / mental-health pathways on zh pages
- Kroenke K, Spitzer RL, Williams JB. J Gen Intern Med 2001 (PHQ-9) · 出典 ↗
ガイドライン全文の著作権は各学会・出版社に帰属します。 · データセット整理日 2026-10-08
よくある質問
よくある質問
- PHQ-9うつ病スケールは患者データをアップロードしますか？どこで計算しますか？
- 計算はブラウザ内でローカルに行われ、入力と結果はサーバーに送信されません。免許を有する医師向けであり、病歴・検査・施設プロトコルと合わせて解釈すること。診断や処方の代替ではありません。
- PHQ-9うつ病スケールは実際にどう計算しますか？計算例を示せますか？
- 代入値: Little interest or pleasure in doing things Several days (1)、Feeling down, depressed, or hopeless Several days (1)、Trouble falling/staying asleep, or sleeping too much Several days (1)、Feeling tired or having little energy Several days (1)、Poor appetite or overeating Several days (1)、Feeling bad about yourself — or that you are a failure Several days (1)、Trouble concentrating on things Several days (1)、Moving or speaking slowly / being fidgety or restless Several days (1)… → 結果: PHQ-9 9 /27（Severity band: Mild (5–9)、Item 9 (self-harm thoughts): Positive — perform safety assessment now） 代入値: Little interest or pleasure in doing things Not at all (0)、Feeling down, depressed, or hopeless Not at all (0)、Trouble falling/staying asleep, or sleeping too much Not at all (0)、Feeling tired or having little energy Not at all (0)、Poor appetite or overeating Not at all (0)、Feeling bad about yourself — or that you are a failure Not at all (0)、Trouble concentrating on things Not at all (0)、Moving or speaking slowly / being fidgety or restless Not at all (0)… → 結果: PHQ-9 0 /27（Severity band: None–minimal (0–4)、Item 9 (self-harm thoughts): 0 — still screen clinically if concern）
照合手順
照合と根拠
本ツールの数式と計算方法は本ページに明示しており、公開のうえ逐一照合できます。数式・係数・閾値は上記の権威ある情報源に基づき照合しています。 臨床ツール一覧 →