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Abstract：
BACKGROUND: The labor supply of nurses, as one of the main healthcare workers, is an important issue in health human resources planning in all health systems. Finding the factors affecting it, could help policymakers to solve the shortage of nursing work supply. The present study aimed to investigating the quantity and factors affecting the nurses\' labor supply in Iran.
METHODS: In this cross-sectional study, a sample of 598 nurses working in public hospitals of Shiraz (Iran) were selected via proportionate stratified random sampling method. The required data was collected using a structured questionnaire which asked working hours and other related factors. To analyze the data, descriptive statistics, univariate analysis and multivariate linear regression were performed using STATA 15. The multivariate labor supply model was estimated separately for married and single nurses. RESULTS: The average weekly working hours of nurses was 54.65 h in all medical centers and 50.28 h in the main hospital. The regression results showed that the labor supply of nurses with work experience (β = - 0.368, P = 0.014), satisfaction with work shift arrangement (β = - 2.473, P = 0.001), income between 60-89 million rial (β = - 14.046, P = 0.002), income between 90-119 million rial(β = - 12.073, P = 0.012), and working in the emergency department (β = - 5.043, P = 0.017) had negative and significant relationship; But there was a positive and significant relationship with satisfaction of the work environment (β = 1.86, P = 0.011), workload at work (β = 1.951, P = 0.023) and employment status (contractual employees) (β = 4.704, P = 0.004).
CONCLUSIONS: The labor supply function of nurses is affected by demographic, economic and non-economic factors. The most contributing factors were related to non-economic variables. It seems that the non-financial cost and benefits related to the job as well as internal factors have more important role on the nurses\' labor supply.
METHODS: In this cross-sectional study, a sample of 598 nurses working in public hospitals of Shiraz (Iran) were selected via proportionate stratified random sampling method. The required data was collected using a structured questionnaire which asked working hours and other related factors. To analyze the data, descriptive statistics, univariate analysis and multivariate linear regression were performed using STATA 15. The multivariate labor supply model was estimated separately for married and single nurses. RESULTS: The average weekly working hours of nurses was 54.65 h in all medical centers and 50.28 h in the main hospital. The regression results showed that the labor supply of nurses with work experience (β = - 0.368, P = 0.014), satisfaction with work shift arrangement (β = - 2.473, P = 0.001), income between 60-89 million rial (β = - 14.046, P = 0.002), income between 90-119 million rial(β = - 12.073, P = 0.012), and working in the emergency department (β = - 5.043, P = 0.017) had negative and significant relationship; But there was a positive and significant relationship with satisfaction of the work environment (β = 1.86, P = 0.011), workload at work (β = 1.951, P = 0.023) and employment status (contractual employees) (β = 4.704, P = 0.004).
CONCLUSIONS: The labor supply function of nurses is affected by demographic, economic and non-economic factors. The most contributing factors were related to non-economic variables. It seems that the non-financial cost and benefits related to the job as well as internal factors have more important role on the nurses\' labor supply.
摘要：
背景：护士的劳动力供应，作为主要的医护人员之一，是所有卫生系统卫生人力资源规划中的一个重要问题。找到影响它的因素，可以帮助决策者解决护理工作供给不足的问题。本研究旨在调查影响伊朗护士劳动力供应的数量和因素。
方法：在这项横断面研究中，我们通过按比例分层随机抽样方法抽取了在设拉子(伊朗)公立医院工作的598名护士的样本.使用结构化问卷收集所需的数据，该问卷询问工作时间和其他相关因素。为了分析数据，描述性统计，使用STATA15进行单因素分析和多元线性回归.分别估算已婚和单身护士的多变量劳动供给模型。结果：所有医疗中心护士的平均每周工作时间为54.65h，主要医院为50.28h。回归结果显示,具有工作经验的护士的劳动供给(β=-0.368,P=0.014),对工作班次安排的满意度(β=-2.473，P=0.001)，收入在60-89万里亚尔之间(β=-14.046，P=0.002)，收入在9000-1.19亿里亚尔之间(β=-12.073，P=0.012)，与急诊科工作（β=-5.043，P=0.017）呈负相关，但与工作环境满意度呈正相关（β=1.86，P=0.011）。工作工作量(β=1.951,P=0.023)和就业状况(合同工)(β=4.704,P=0.004)。
结论：护士的劳动供给功能受人口统计学的影响，经济和非经济因素。最大的影响因素与非经济变量有关。看来，与工作相关的非财务成本和收益以及内部因素对护士劳动供给的作用更为重要。
方法：在这项横断面研究中，我们通过按比例分层随机抽样方法抽取了在设拉子(伊朗)公立医院工作的598名护士的样本.使用结构化问卷收集所需的数据，该问卷询问工作时间和其他相关因素。为了分析数据，描述性统计，使用STATA15进行单因素分析和多元线性回归.分别估算已婚和单身护士的多变量劳动供给模型。结果：所有医疗中心护士的平均每周工作时间为54.65h，主要医院为50.28h。回归结果显示,具有工作经验的护士的劳动供给(β=-0.368,P=0.014),对工作班次安排的满意度(β=-2.473，P=0.001)，收入在60-89万里亚尔之间(β=-14.046，P=0.002)，收入在9000-1.19亿里亚尔之间(β=-12.073，P=0.012)，与急诊科工作（β=-5.043，P=0.017）呈负相关，但与工作环境满意度呈正相关（β=1.86，P=0.011）。工作工作量(β=1.951,P=0.023)和就业状况(合同工)(β=4.704,P=0.004)。
结论：护士的劳动供给功能受人口统计学的影响，经济和非经济因素。最大的影响因素与非经济变量有关。看来，与工作相关的非财务成本和收益以及内部因素对护士劳动供给的作用更为重要。
