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Table 2 Details of model variables

From: New evidence in the relationship between trade openness and food security in Sub-Saharan Africa

Variables

Definition of variables

Unity

Recent usage in extant Studies

Sources

ADESA

Average dietary energy supply adequacy

%

Fusco et al. [34]

FAOSTAT

APS

Average protein supply

g/cap/day

FAO, [60]

FAOSTAT

PCFSV

Per capita food supply variability

Kcal/cap/day

Remans et al.[61]

FAOSTAT

SDES

Share of dietary energy supply derived from cereals. roots and tubers

Kcal/cap/day

Bai and al., [62]

FAOSTAT

Openness

Trade openness in % of GDP a

%

Yanikkaya, [49]

WDI

Globalization

KOF index of globalization (0–100); composite index measuring three dimensions (economic, social, political)

Gygli et al. [64]

KOF Swiss Economic Institute

Corruption

Control of corruption score b

Kar & Saha, [65]

WGI

Governance

Government Effectiveness score

Olofin et al.[66]

WGI

Political

Political Stability score

Golo [36]

WGI

Remittances

Personal Remittances received

% of GDP

Mabrouk & Mekni, [67]

WDI

EDUC

Secondary school enrollment proxy of human capital

% Gross

Okah et al. [59]

WDI

Log (GDP)

GDP per capita. PPP Constant 2017

international $

Bezuneh & yiheyis [60]

WDI

SADGP

Agriculture, forestry, and fishing, value added

% GDP

Ogunniyi et al. [61]

WDI

POP growth

Population growth

(Annual %),

Yunusa et al. [62]

WDI

IND

The intensity of natural disasters is measured as the number of affected divided by the total population

%

Tirivangasi [63]

EM-DAT

Inflation

Consumer prices inflation

Ames et al. [50]

WDI

Agri. product

Cereal yield

kg/per/hectare

Muzari [64]

FAOSTAT

Landlocked

Indicator variable takes the value of 1 for landlocked countries and 0 otherwise

Rahim [65]

CEPII

  1. a Trade openness is the sum of exports and imports of goods and services measured as a share of gross domestic product (source: World Development Indicators, 2023)
  2. b According to Worldwide Governance Indicators (WGI), the six aggregate indicators as institutional variables are reported in two ways: (1) in their standard normal units, ranging from approximately -2.5 to 2.5, and (2) in percentile rank terms from 0 to 100, with higher values corresponding to better outcomes. In this study, ranging from approximately − 2.5 to 2.5 is used following Ogunniyi et al. [61]
  3. Source: Authors, 2022